• Alexa bleeds cash ¨, Elon's AI cluster ¨, finding technical co-founders ¨¨

    From TLDR@VERT to tldr@synchro.net on Tue Jul 23 10:35:53 2024
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    Amazon's bet that people would spend meaningful amounts of money to
    buy g=
    oods on its platform by talking to its voice assistant hasn't
    paid off=
    =C2=A0=20

    Sign Up [1] |Advertise [2]|View Online [3]=20

    =09=09TLDR =


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    TLDR 2024-07-23

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    BIG TECH & STARTUPS

    ELON MUS=
    K'S XAI ACTIVATES =E2=80=9CMOST POWERFUL AI TRAINING CLUSTER IN THE
    WORLD=
    =E2=80=9D WITH 100K NVIDIA H100 GPUS (2 MINUTE READ) [8]=20

    xAI has act=
    ivated a supercomputer cluster comprised of 100,000 Nvidia
    H100 GPUs in M=
    emphis, Tennessee. It is effectively the most powerful
    AI training cluste=
    r in the market today. The supercomputer is expected
    to be used to train =
    Grok, the company's large language model. xAI is
    estimated to have spent =
    about $3 billion to $4 billion on the project.
    xAI also recently announce=
    d that it is hiring to increase its human
    talent advantage.=20

    ALEXA =
    IS IN MILLIONS OF HOUSEHOLDS=E2=80=94AND AMAZON IS LOSING BILLIONS
    (13 MI=
    NUTE READ) [9]=20

    While hundreds of millions of customers own Alexa-ena=
    bled devices,
    Amazon's bet that people would spend meaningful amounts of =
    money to
    buy goods on its platform by talking to the voice assistant hasn=
    't
    paid off. Customers mostly use Alexa to set alarms and check the
    wea=
    ther. Amazon has lost tens of billions of dollars on its devices
    business=
    . The company will launch a paid tier for Alexa as soon as
    this month as =
    part of the plan to reverse these losses.=20

    =F0=9F=9A=80=20

    SCIENCE =
    & FUTURISTIC TECHNOLOGY

    CHINA UNVEILS WORLD'S 1ST MELTDOWN-PROOF NUCL=
    EAR REACTOR WITH 105 MW
    CAPACITY (4 MINUTE READ) [10]=20

    Researchers =
    at Tsinghua University in China have successfully
    demonstrated a meltdown=
    -proof nuclear fission reactor. The twin
    reactor design can generate 105 =
    MW of power each. It can cool itself
    down without an external power sourc=
    e, reaching stable temperatures
    around 35 hours after shutdown. Construct=
    ion of the facility started
    in 2016, with commercial operations beginning=
    only in December last
    year. One drawback of the technology is that it ca=
    n't be retrofitted
    onto existing nuclear reactors.=20

    WE'RE BUILDING =
    NUCLEAR SPACESHIPS AGAIN=E2=80=94THIS TIME FOR REAL (23
    MINUTE READ) [11]=
    =20

    Powering spaceships using compact reactors could cut down Mars
    tr=
    ansit times by more than half. The technology also has military
    applicati=
    ons, with DARPA requesting a nuclear rocket demonstrator in
    June 2020. Th=
    e Demonstration Rocket for Agile Cislunar Operations
    (DRACO) project aims=
    to create space-based assets that can move
    quickly within space to deter=
    strategic attacks by adversaries. This
    article discusses the DRACO proje=
    ct and the technologies that make it
    possible.=20

    =F0=9F=92=BB=20

    P=
    ROGRAMMING, DESIGN & DATA SCIENCE

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    MISCELLANEOUS

    ETHER=
    EUM ETFS APPROVED BY SEC, BRINGING POPULAR FUNDS TO
    SECOND-LARGEST CRYPTO=
    CURRENCY (3 MINUTE READ) [15]=20

    US regulators have approved spot excha=
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    Ethereum. Bitcoin ETFs, which were approved in=
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    WHY TECHNICAL COFOUNDERS REJE=
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    QUICK LINKS=


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    <div style=3D"display:none; font-size:0px; line-height:0px; max-height:0px;=
    max-width:0px; opacity:0; overflow:hidden; visibility:hidden; mso-hide:all= ;">Amazon&#039;s bet that people would spend meaningful amounts of money to=
    buy goods on its platform by talking to its voice assistant hasn&#039;t pa=
    id off&nbsp;</div>




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    <table align=3D"center" bgcolor=3D"" border=3D"0" cellpadding=3D"0" cellspa= cing=3D"0" width=3D"100%"><tbody><tr id=3D"together-with"><td align=3D"cent= er" height=3D"20" style=3D"vertical-align:middle !important;" valign=3D"mid= dle" width=3D"100%"><strong style=3D"vertical-align:middle !important; heig= ht: 100%;">Together With </strong>
    <a href=3D"https://tracking.tldrnewsletter.com/CL0/https:%2F%2Fworkos.com%2= Fblog%2Fdevelopers-guide-to-rbac-part-i%2F%3Futm_source=3Dtldr%26utm_medium= =3Dnewsletter%26utm_campaign=3Dq22024/1/01000190df2972d5-352418f6-0495-4258= -a212-2209faa9952d-000000/T-fUBXTfiW00G5vY1qeJjabbWpLmHr59T0CPdzFNano=3D362= "><img src=3D"https://images.tldr.tech/workos50.png" valign=3D"middle" styl= e=3D"vertical-align: middle !important; height: 100%;" alt=3D"WorkOS"></a><= /td></tr></tbody></table>

    <table style=3D"table-layout: fixed; width:100%;" width=3D"100%"><tbody><tr= ><td style=3D"padding:0;border-collapse:collapse;border-spacing:0;margin:0;=

    <div style=3D"text-align: center;">

    <h1><strong>TLDR <span id=3D"date">2024-07-23</span></strong></h1>
    </div>
    </td></tr>
    <tr id=3D"sponsy-copy"><td class=3D"container" style=3D"padding: 15px 15px;=

    <div class=3D"text-block">
    <span>
    <a href=3D"https://tracking.tldrnewsletter.= com/CL0/https:%2F%2Fworkos.com%2Fblog%2Fdevelopers-guide-to-rbac-part-i%2F%= 3Futm_source=3Dtldr%26utm_medium=3Dnewsletter%26utm_campaign=3Dq22024/2/010= 00190df2972d5-352418f6-0495-4258-a212-2209faa9952d-000000/vNzwxm1WQPG5OKW6i= LEykhjbNcNCA8hYOsp6G1gcyck=3D362">
    <span>
    <strong>Learn Authorization with Wo= rkOS: Technical Resources for Developers (Sponsor)</strong>
    </span>



    <span style=3D"font-family: &quot;Helvetica Neue&quot;, Helvetica, Arial, V= erdana, sans-serif;">
    Authorization (AuthZ) often takes the b= ackseat to authentication (AuthN), but it is just as important when scaling=
    your B2B SaaS apps for enterprises.<p></p><p>Check out these detailed<stro=
    developer guides</strong> from WorkOS to get up to speed quickly:</p><p=
    =E2=86=92 <a href=3D"https://tracking.tldrnewsletter.com/CL0/https:%2F%2Fw= orkos.com%2Fblog%2Fdevelopers-guide-to-rbac-part-i%2F%3Futm_source=3Dtldr%2= 6utm_medium=3Dnewsletter%26utm_campaign=3Dq22024/3/01000190df2972d5-352418f= 6-0495-4258-a212-2209faa9952d-000000/oIVzbnP3BApqS7_SQcUbrKqur7ZNqNlAUZV3Qj= KNt9I=3D362" rel=3D"noopener noreferrer nofollow" target=3D"_blank"><span>T=
    he Developer's Guide to RBAC: Part I</span></a>: Fundamentals of RBAC and h=
    ow it differs from fine-grained authorization (FGA)</p>

    <p>=E2=86=92 <a href=3D"https://tracking.tldrnewsletter.com/CL0/https:%2F%2= Fworkos.com%2Fblog%2Fthe-developers-guide-to-rbac-and-idps-part-ii%2F%3Futm= _source=3Dtldr%26utm_medium=3Dnewsletter%26utm_campaign=3Dq22024/1/01000190= df2972d5-352418f6-0495-4258-a212-2209faa9952d-000000/_sCQVCpSNQvvAta8458fjS= VuPTx7BHG7cROxO9WAkAo=3D362" rel=3D"noopener noreferrer nofollow" target=3D= "_blank"><span>The Developer's Guide to RBAC: Part II</span></a>: Why enter= prises prefer identity provider-based authorization systems over basic Auth= Z</p>

    <p>=E2=86=92 <a href=3D"https://tracking.tldrnewsletter.com/CL0/https:%2F%2= Fworkos.com%2Fblog%2Funlocking-the-power-of-scim%2F%3Futm_source=3Dtldr%26u= tm_medium=3Dnewsletter%26utm_campaign=3Dq22024/1/01000190df2972d5-352418f6-= 0495-4258-a212-2209faa9952d-000000/jrJy2F-r0R5qmSWYDrSjvYS3D3r3cpYTIjWBYYpJ= dKI=3D362" rel=3D"noopener noreferrer nofollow" target=3D"_blank"><span>Unl= ocking the power of SCIM</span></a>: SCIM is critical for user lifecycle ma= nagement and affects how your customers manage roles and permissions</p>

    <p>=E2=86=92 Prefer to learn by doing? <a href=3D"https://tracking.tldrnews= letter.com/CL0/https:%2F%2Fworkos.com%3Futm_medium=3Dnewsletter%26utm_sourc= e=3Dtldr-tech%26utm_campaign=3D20240723/1/01000190df2972d5-352418f6-0495-42= 58-a212-2209faa9952d-000000/cja9V42E1okeqmLEt55eUx8jIR0FxV0YLy5-1mnK0Cw=3D3= 62" rel=3D"noopener noreferrer nofollow" target=3D"_blank"><span>Start buil= ding with WorkOS</span></a>



    </span></span></div>
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    <tr bgcolor=3D""><td class=3D"container">

    <table align=3D"center" bgcolor=3D"" border=3D"0" cellpadding=3D"0" cellspa= cing=3D"0" width=3D"100%"><tbody><tr><td style=3D"padding: 0px;">

    <table align=3D"center" bgcolor=3D"" border=3D"0" cellpadding=3D"0" cellspa= cing=3D"0" width=3D"100%"><tbody><tr><td class=3D"container" style=3D"paddi= ng-top: 0px; padding-bottom: 0px;">
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    <table align=3D"center" bgcolor=3D"" border=3D"0" cellpadding=3D"0" cellspa= cing=3D"0" width=3D"100%"><tbody><tr><td class=3D"container" style=3D"paddi= ng-top: 0px; padding-bottom: 0px;">
    <div class=3D"text-block">
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    <h1><strong>Big Tech &amp; Startups</strong></h1>
    </div>
    </div>
    </td></tr></tbody></table>

    <table style=3D"table-layout: fixed; width: 100%;" width=3D"100%"><tbody><t= r><td style=3D"padding:0;border-collapse:collapse;border-spacing:0;margin:0=
    ;" valign=3D"top">

    <table align=3D"center" border=3D"0" cellpadding=3D"0" cellspacing=3D"0" wi= dth=3D"100%"><tbody><tr><td class=3D"container" style=3D"padding: 15px 15px=

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    <span>
    <strong>Elon Musk's xAI activates = =E2=80=9Cmost powerful AI training cluster in the world=E2=80=9D with 100k = Nvidia H100 GPUs (2 minute read)</strong>
    </span>



    <span style=3D"font-family: &quot;Helvetica Neue&quot;, Helvetica, Arial, V= erdana, sans-serif;">
    xAI has activated a supercomputer clust=
    er comprised of 100,000 Nvidia H100 GPUs in Memphis, Tennessee. It is effec= tively the most powerful AI training cluster in the market today. The super= computer is expected to be used to train Grok, the company's large language=
    model. xAI is estimated to have spent about $3 billion to $4 billion on th=
    e project. xAI also recently announced that it is hiring to increase its hu= man talent advantage.
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    <table align=3D"center" border=3D"0" cellpadding=3D"0" cellspacing=3D"0" wi= dth=3D"100%"><tbody><tr><td class=3D"container" style=3D"padding: 15px 15px=

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    </span>



    <span style=3D"font-family: &quot;Helvetica Neue&quot;, Helvetica, Arial, V= erdana, sans-serif;">
    While hundreds of millions of customers=
    own Alexa-enabled devices, Amazon's bet that people would spend meaningful=
    amounts of money to buy goods on its platform by talking to the voice assi= stant hasn't paid off. Customers mostly use Alexa to set alarms and check t=
    he weather. Amazon has lost tens of billions of dollars on its devices busi= ness. The company will launch a paid tier for Alexa as soon as this month a=
    s part of the plan to reverse these losses.
    </span>
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    </div>
    </td></tr></tbody></table>

    </td></tr></tbody></table>


    <table align=3D"center" bgcolor=3D"" border=3D"0" cellpadding=3D"0" cellspa= cing=3D"0" width=3D"100%"><tbody><tr><td class=3D"container" style=3D"paddi= ng-top: 0px; padding-bottom: 0px;">
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    <div style=3D"text-align: center;"><span style=3D"font-size: 36px;">=F0=9F= =9A=80</span></div>
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    <h1><strong>Science &amp; Futuristic Technology</strong></h1>
    </div>
    </div>
    </td></tr></tbody></table>

    <table style=3D"table-layout: fixed; width: 100%;" width=3D"100%"><tbody><t= r><td style=3D"padding:0;border-collapse:collapse;border-spacing:0;margin:0=
    ;" valign=3D"top">

    <table align=3D"center" border=3D"0" cellpadding=3D"0" cellspacing=3D"0" wi= dth=3D"100%"><tbody><tr><td class=3D"container" style=3D"padding: 15px 15px=

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    <strong>China unveils world's 1st m= eltdown-proof nuclear reactor with 105 MW capacity (4 minute read)</strong>
    </span>



    <span style=3D"font-family: &quot;Helvetica Neue&quot;, Helvetica, Arial, V= erdana, sans-serif;">
    Researchers at Tsinghua University in C= hina have successfully demonstrated a meltdown-proof nuclear fission reacto=
    r. The twin reactor design can generate 105 MW of power each. It can cool i= tself down without an external power source, reaching stable temperatures a= round 35 hours after shutdown. Construction of the facility started in 2016=
    , with commercial operations beginning only in December last year. One draw= back of the technology is that it can't be retrofitted onto existing nuclea=
    r reactors.
    </span>
    </span>
    </div>
    </td></tr></tbody></table>

    <table align=3D"center" border=3D"0" cellpadding=3D"0" cellspacing=3D"0" wi= dth=3D"100%"><tbody><tr><td class=3D"container" style=3D"padding: 15px 15px=

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    </span>



    <span style=3D"font-family: &quot;Helvetica Neue&quot;, Helvetica, Arial, V= erdana, sans-serif;">
    Powering spaceships using compact react= ors could cut down Mars transit times by more than half. The technology als=
    o has military applications, with DARPA requesting a nuclear rocket demonst= rator in June 2020. The Demonstration Rocket for Agile Cislunar Operations = (DRACO) project aims to create space-based assets that can move quickly wit= hin space to deter strategic attacks by adversaries. This article discusses=
    the DRACO project and the technologies that make it possible.
    </span>
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    </td></tr></tbody></table>


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    <div class=3D"text-block">
    <div style=3D"text-align: center;"><span style=3D"font-size: 36px;">=F0=9F= =92=BB</span></div></div>
    </td></tr></tbody></table>

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    <div style=3D"text-align: center;">

    <h1><strong>Programming, Design &amp; Data Science</strong></h1>
    </div>
    </div>
    </td></tr></tbody></table>

    <table style=3D"table-layout: fixed; width: 100%;" width=3D"100%"><tbody><t= r><td style=3D"padding:0;border-collapse:collapse;border-spacing:0;margin:0=
    ;" valign=3D"top">

    <table align=3D"center" border=3D"0" cellpadding=3D"0" cellspacing=3D"0" wi= dth=3D"100%"><tbody><tr><td class=3D"container" style=3D"padding: 15px 15px=

    <div class=3D"text-block">
    <span>
    <a href=3D"https://tracking.tldrnewsletter.= com/CL0/https:%2F%2Fadvertise.tldr.tech%2F%3Futm_source=3Dtldr%26utm_medium= =3Dnewsletter%26utm_campaign=3Dsecondary07232024/1/01000190df2972d5-352418f= 6-0495-4258-a212-2209faa9952d-000000/JohwASepaq7c6ZL6crJ0HAzugj3YJKY96PvRLX= HVZnc=3D362">
    <span>
    <strong>Advertise in TLDR, get in f= ront of 4+ million tech professionals (Sponsor)</strong>
    </span>



    <span style=3D"font-family: &quot;Helvetica Neue&quot;, Helvetica, Arial, V= erdana, sans-serif;">
    If you're looking to get in front of so= ftware developers, product managers, executives and other tech professional=
    s, consider advertising in TLDR. We have 10 newsletters to choose from and =
    a subscriber base of 4+ million tech professionals to effectively reach you=
    r target audience. <a class=3D"c-link" href=3D"https://tracking.tldrnewslet= ter.com/CL0/https:%2F%2Fadvertise.tldr.tech%2F%3Futm_source=3Dtldr%26utm_me= dium=3Dnewsletter%26utm_campaign=3Dsecondary07232024/2/01000190df2972d5-352= 418f6-0495-4258-a212-2209faa9952d-000000/ipXIUWWnBOgf8D5rvD1I46ghXC_l6TwMDJ= Zj4eXcI-g=3D362" rel=3D"noopener noreferrer" target=3D"_blank"><span>Learn = more</span></a> about running your first campaign with us.
    </span>
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    <table align=3D"center" border=3D"0" cellpadding=3D"0" cellspacing=3D"0" wi= dth=3D"100%"><tbody><tr><td class=3D"container" style=3D"padding: 15px 15px=

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    </span>



    <span style=3D"font-family: &quot;Helvetica Neue&quot;, Helvetica, Arial, V= erdana, sans-serif;">
    Maestro is a general-purpose workflow o= rchestrator that can schedule millions of jobs every day and operate with a=
    strict SLO even when there are spikes in traffic. It is highly scalable an=
    d extensible and provides a fully managed workflow-as-a-service. Maestro se= rves thousands of data platform users at Netflix for various use cases.
    </span>
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    <table align=3D"center" border=3D"0" cellpadding=3D"0" cellspacing=3D"0" wi= dth=3D"100%"><tbody><tr><td class=3D"container" style=3D"padding: 15px 15px=

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    <span>
    <strong>Jiff (GitHub Repo)</strong>
    </span>



    <span style=3D"font-family: &quot;Helvetica Neue&quot;, Helvetica, Arial, V= erdana, sans-serif;">
    Jiff is a datetime library for Rust. It=
    provides high level datetime primitives with reasonable performance that a=
    re difficult to misuse. Jiff supports automatic and seamless integration wi=
    th the Time Zone Database, DST aware arithmetic and rounding, formatting an=
    d parsing zone aware datetimes losslessly, opt-in Serde support, and more. = Its minimum supported rustc version is 1.70.0.
    </span>
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    </td></tr></tbody></table>



    <table align=3D"center" bgcolor=3D"" border=3D"0" cellpadding=3D"0" cellspa= cing=3D"0" width=3D"100%"><tbody><tr><td class=3D"container" style=3D"paddi= ng-top: 0px; padding-bottom: 0px;">
    <div class=3D"text-block">
    <div style=3D"text-align: center;"><span style=3D"font-size: 36px;">=F0=9F= =8E=81</span></div></div>
    </td></tr></tbody></table>

    <table align=3D"center" bgcolor=3D"" border=3D"0" cellpadding=3D"0" cellspa= cing=3D"0" width=3D"100%"><tbody><tr><td class=3D"container" style=3D"paddi= ng-top: 0px; padding-bottom: 0px;">
    <div class=3D"text-block">
    <div style=3D"text-align: center;"><strong><h1>Miscellaneous</h1></strong><= /div>
    </div>
    </td></tr></tbody></table>

    <table bgcolor=3D"" style=3D"table-layout: fixed; width: 100%;" width=3D"10= 0%"><tbody><tr><td style=3D"padding:0;border-collapse:collapse;border-spaci= ng:0;margin:0;" valign=3D"top">

    <table align=3D"center" border=3D"0" cellpadding=3D"0" cellspacing=3D"0" wi= dth=3D"100%"><tbody><tr><td class=3D"container" style=3D"padding: 15px 15px=

    <div class=3D"text-block">
    <span>
    <a href=3D"https://tracking.tldrnewsletter.= com/CL0/https:%2F%2Fwww.coindesk.com%2Fbusiness%2F2024%2F07%2F22%2Fsec-appr= oves-spot-ethereum-etfs%2F%3Futm_source=3Dtldrnewsletter/1/01000190df2972d5= -352418f6-0495-4258-a212-2209faa9952d-000000/iAaSq6gEFpu3r9iXSfifS-bcfQV7V-= liE53cwDmH82A=3D362">
    <span>
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    </span>



    <span style=3D"font-family: &quot;Helvetica Neue&quot;, Helvetica, Arial, V= erdana, sans-serif;">
    US regulators have approved spot exchan= ge-traded funds that hold Ethereum. Bitcoin ETFs, which were approved in Ja= nuary, have attracted tens of billions of dollars of investment. Some analy= sts predict that inflows into ETH ETFs won't be nearly as high as for BTC E= TFs. Ethereum doesn't have the first-mover advantage that Bitcoin had and i=
    t lacks a strong narrative.
    </span>
    </span>
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    <table align=3D"center" border=3D"0" cellpadding=3D"0" cellspacing=3D"0" wi= dth=3D"100%"><tbody><tr><td class=3D"container" style=3D"padding: 15px 15px=

    <div class=3D"text-block">
    <span>
    <a href=3D"https://tracking.tldrnewsletter.= com/CL0/https:%2F%2Fwww.softwaredesign.ing%2Fblog%2Fwhy-technical-cofounder= s-reject-you%3Futm_source=3Dtldrnewsletter/1/01000190df2972d5-352418f6-0495= -4258-a212-2209faa9952d-000000/YFApcCTXY9ZWSX0LNWI7Ei8KBchXPJLAupOv7WPlmPo= =3D362">
    <span>
    <strong>Why technical cofounders re= ject you (7 minute read)</strong>
    </span>



    <span style=3D"font-family: &quot;Helvetica Neue&quot;, Helvetica, Arial, V= erdana, sans-serif;">
    There are many reasons technical cofoun= ders will reject a startup. This article discusses some of these factors, s= uch as unrealistic expectations from founders, putting too much value on an=
    idea, or a lack of understanding of the market. Building a compelling case=
    for a technical cofounder to want to join a founder involves providing pro=
    of that the idea or product will work and that the founder is able to bring=
    the idea to life. Founders need to prove that they will be successful and = that the train is departing.
    </span>
    </span>
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    </td></tr></tbody></table>

    </td></tr></tbody></table>


    <table align=3D"center" bgcolor=3D"" border=3D"0" cellpadding=3D"0" cellspa= cing=3D"0" width=3D"100%"><tbody><tr><td class=3D"container" style=3D"paddi= ng-top: 0px; padding-bottom: 0px;">
    <div class=3D"text-block">
    <div style=3D"text-align: center;"><span style=3D"font-size: 36px;">=E2=9A= =A1</span></div></div>
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    <h1><strong>Quick Links</strong></h1>
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