It looks like this is a web page, not a feed. I looked for a feed associated with this page, but couldn't find one. Please enter the address of your feed to validate.

Source: https://blog-aff39tzli.mit-edu.top/post/3915402786

  1. <!DOCTYPE html><html lang="en-US"><head><title>Just a moment...</title><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta http-equiv="X-UA-Compatible" content="IE=Edge"><meta name="robots" content="noindex,nofollow"><meta name="viewport" content="width=device-width,initial-scale=1"><style>*{box-sizing:border-box;margin:0;padding:0}html{line-height:1.15;-webkit-text-size-adjust:100%;color:#313131;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,Noto Sans,sans-serif,Apple Color Emoji,Segoe UI Emoji,Segoe UI Symbol,Noto Color Emoji}body{display:flex;flex-direction:column;height:100vh;min-height:100vh}.main-content{margin:8rem auto;max-width:60rem;padding-left:1.5rem}@media (width <= 720px){.main-content{margin-top:4rem}}.h2{font-size:1.5rem;font-weight:500;line-height:2.25rem}@media (width <= 720px){.h2{font-size:1.25rem;line-height:1.5rem}}#challenge-error-text{background-image:url(data:image/svg+xml;base64,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);background-repeat:no-repeat;background-size:contain;padding-left:34px}@media (prefers-color-scheme:dark){body{background-color:#222;color:#d9d9d9}}</style><meta http-equiv="refresh" content="390"></head><body class="no-js"><div class="main-wrapper" role="main"><div class="main-content"><noscript><div class="h2"><span id="challenge-error-text">Enable JavaScript and cookies to continue</span></div></noscript></div></div><script>(function(){window._cf_chl_opt={cvId: '3',cZone: "blog-aff39tzli.mit-edu.top",cType: 'managed',cRay: '910f8c14accb05e8',cH: 'eq2PPTAKtsp02DA8gIgbHlLmHt_wVUy7R_DC_FnoIXI-1739394435-1.2.1.1-ZvCiZoZzXvxlCacrgm9D1q3yNE4W0v.FvwjWfiVmH4RjlJwKLKoKZps87wVaVHpZ',cUPMDTk: "\/post\/3915402786?__cf_chl_tk=KGQteUZDh_doa16qXabz56TO5l7354Frf5cOEioIXHQ-1739394435-1.0.1.1-tGzXPyu3zRdbsiLDShUwTPLH4ySfyw7qtQbZSDG2Rjs",cFPWv: 'b',cITimeS: '1739394435',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/3915402786?__cf_chl_f_tk=KGQteUZDh_doa16qXabz56TO5l7354Frf5cOEioIXHQ-1739394435-1.0.1.1-tGzXPyu3zRdbsiLDShUwTPLH4ySfyw7qtQbZSDG2Rjs",md: "g9cZPr_du4fP7FuWzfOtQu9njJttxIkRNbYL70T.0VU-1739394435-1.2.1.1-gGfOKbIfgi9NDeLSiBkNZGEmu2_h.Pl1tcrC1awwPMGFX7jDEsAHbflmuqSBrmRLBiwBmOa8qcCtLLAoP.0kbEdTU4xEMQbYN.ax6eQH0jhOiksyEz98Xte65.TdEjPbKhs1P7qUDti.CGnKXn0WjDy2vHP0JcqlkTIaPFFT9L_apafRXQcd8P39bVWvOb9oll3MP6.GzrYJ_Wj9pMtwmYQ0kdgr6eTE88pfgxfIaMXllqJhAhnSA1Ld1weKGWdqZ2xpoZYPolu0U3EK3ty7D.3XCAmZkFClXWAakhsrb0E2Vrs4.UC3YEI.VpjvcqE3Lr5KySyXLnpZ7CdagkN.hWF5xRIqla5zXPZ6QkBtv9PN1vBYuWyFeef.eZZyYvt1zCNTiP3CP5ox4FVqjOzksfiP3z_vHNur1ZqaA25Njg9lqiDfT7ySYUBmgOxfY9fAjt1Y1XqlAnpaqfJobSbLYZgIWPAeIVKDhRaMU6HIqYVUkBpl0lb308Q16RymhQgadkEiL.Qa5QY4Kq_.oWydTMTsfxtD2EG.pVTk2E.5txP.ftEWh7Ehp0W0HUoqnUPDibhKPJtqBVRx1WLIxcjOaHJPWS17rhxPdeTkLTQQSsUVfnd4rBO.BNrNtutatRKKNGfdN1nhQ7rgQwIt.ufh9HKwGGNdux.yzaLIsN27GCZr7z2_nW_a0wNGvTgQ62AjQm9P3EwftZ46_jKsbWIFnVrFqy5ARy2xPfaEoPnTzJe36gT0lW59j.nBz0P5ozP427SgJKTSkPXWDICPZ3gRY5.gUjwrAwL4mCwk3s4NeMDt8z8hCy4Eb0Aa6eF58pdh5aEPPhiatz3Rvn4aqDzv4WuFgtG3MWYY37RPUwF8ScVyOEU8hu1jFDG7c.YcnM74fg3JfAsDxg01RK.gdNC474Aq8FyTBHCDXQIoNSIm6rkZyPfXOG1VX73SpzO3VCfXS3hF1HCqnQoF5sVCzOdhew8_GPWL9xa2N5_CN2C3xz5YlfhXFY6_vAyNrEko6engBgphmZ0sk5LOE4e08FBxRY5ldlpaLCckmsSKCcIwG4KgSU7B9xolv4ZihTS.8FuS2AcTEUTIUtvvcIPbi8hKTj_P1GSSVEpFtnIexa8HgVk29aitCp1R3566GNlpbVDkAcH3RZ8EyXU6OtCMRd1Hhx3E0YAMwwJyqPv79ziNr2sneWof342hNh80udwFwz08EXHKZwLnP8PT9LhAANbbaynGIYWp0XbmwjkMFyAfFPTmGEBhKJViWsUJ3yfMWQRZvTvSgYhbFY3ksFLGTxjeucdD6Di5Q2I7xVHpxULumXIrsDsPo_rvFf.vUdb7BbEEn8bpEKWuq7kFk9LMR_F.YxvZbo7UwDk_1SVModJBo6FVSDZodGtnMI0pVC7auqySgmZq1w3e8MiiVVzYy8UdyPJqruic2R0WzzjAaxZpbWMYig4ICf1t5D1q6lZ.Rq9nAm_VOCDAbaI1dJl_nH_9.0PkAQGqlOw3UnOuIq_Z_bLLN.U9nFQYGz1NPY114cdWJVIqmQptPLlvXmPo3ScH2YBH_BGeQkYZWPXs7FcPaOZelCj6EapD5NRWgOczGNzveZhFKw7B_8HhyGUe.LfoFGmW3wfd3gqKn5moBlbT6pACfePs.Z7AjQfxkDGWo9wtyV34_6.YAuDiBXw2QvCKTPfscrD.E9YZooTWTNxwgFfUs_kKqPYZkK0ACX.WgGltqmzsXYIoXWCsmPEqq2L8AKeSvTLNFzXYp6G5xWvVMLXYRD_8H._gpPQ3VbY1XFGEeLoCgZTtcQI1J1vOiZtvTE1B2SJn.kIwOQ1Fl.jGcZhoSItQMM7_q8xEJScgq2M7zMYZ56X67VWVLh_JVxDo32w6I_341uD0oT.Bp8HKdPlNmgxM38BPmFPcdjMEs9pdGrrkoJot812mxxNn7Ohyg9KsYvoRSubODvWrPRG59jq3xfJZsW5yQmsb18egWFFnOkbK1QYaSexbuCg6CRTWg8XKvnSYDVNb1tRs0mfXTwtPvqW7s1jcwIY1CqrAb0hC5OqFRRcfFaTFIwh0BtZp2g9S0l9Bn2u7edG_v6O7M5XmM4l2xVS0ZRSZv0PSn.imnsKv1Cgk.Dzsx2BqL899ZgYvs9jsz5N8UvT44bp1S3kQbu7dd7tVX1no8LXfLnfWrpYOLBA9JMNACMIkRAlTItgPRBWGrRtGGQHnpTKI68C0H31bijqNTJ7g2GlMhJci",mdrd: "UWuJLa6lp60No1qQpAOt.h3BqqgvnOg0iCIGoH0fmmc-1739394435-1.2.1.1-GR9LasCGkX.5gQwwZAwebexDL2LCZDdLIlYR7SCUjxhGzOZJWsE48TPYxzHtihYRQPKgM2.E0gNWHxsrp.H.zneUtpzoItlWTXTKZCanZILelU..YdiN4y4ndXAY8zjfDaDOF9V3Y7nWw5ZnPuOh8fR0nq.Sa305SG8ZDK74TFiC_K.cBKFP2ejiW.NCvFfPGe6WCgN19EyULl39qmPy5xZaTI1RBTz_FwHF5BSzLFeafK2xUEqz0RQsSfOlii3Me.cU3g4yXv99NU62bCqlbah64XGiI7.QSTosa4O77CzNZw_gJps3P5ELqtunUNbFNxtGsse2Lpl3XOC.aPmKX2Tim_HoGjkfIy9b7lHn1awcWiW0sdUrdLs_LWSaPA3ymYGB72kPNK.ogag_XATt_yEGfOxMS7T4B1t.mpdLiew.Gf0laz4oXSeMt2qQ_rR.K0qADxxm7M1ZlRqErj_UHVdPgb_NWqqZ23C_W8ik1IA_Rgyd9lAfvugUBbPryHVBIx8CgAAxc59TYDxWpZaJneE2aST1ZXWjOFyovGUeii_U890bmBDEVr0WIU4rR47gCBOcvadUklqbA6a1h6mxUn5pcdUZDI44Iyq4.jEFzrDJFaVdplD9zht6dbav.s3_pSqmOOAT1OYbokL.mgEjPjEHKlSSsttvFKaow0tXvZz7jV07OuQHwou7HrMBfPvNM1yCRB9X68ExS5_myeqHLf7_LUITl.MIIaS4THfUZRSBlyvGi5R9RMl7rOzQZVkwdyf26CfXxsB03rAHOAchpN5afRoNsAp05jxXsxlSmd.5AmvHJEbWNt2jnLdzawobVv7QXRBiOzgV8E3TtoseTvC1zXemW6Xm.cIjrBXy1vKks3CHcN3RvqTw168zceMxGA49D7U0lSrYSCsRj0MQUSW.s5cbVEqEKSVJctnOdw7nIp5kwNqIU6pIJ31baxZyWPiGsoZ6ZHjzQi0lfl2viGIQdX2Ce3pCLG1YfEEY5gtqKVx5KgZ8gkuayQuIggZBC3Pc53ntfVfsg.0r64QevnmacbFRTZIzbXGKQz4i_oU3GtPnl3LAYF_6cbS4t5n6LugEbYtP4XeObqc7PVOih6C9sLgEGCXlfFupbcG42mNrUTbUz0OUMKkEXBxJZpW.Ms3tN4sSqFG5xRGDYMA83u.HDLxdwL0u9uhivn305BaB20PAZJqyqB._shu5YoGSXh4V19Bx_aQKy1TeD0a_DN1AhbFCF71Msk5Yy07Dtw8d4EUVxr440NzVVV86s1UtNBJ8ZRuvujYqVjNyisAg0lsNMSKCdWBeja.A1iLrSF8Y3l9cB.A3qfEjDFYbP.zhLXA.tDBoJApkFEvZZKQJPX7YbJZyq0zGlui95LWQEhvdsUMbyn8fzSlQ5H0qaKHhV2SgtTsn9PHWsrgY31sQZYaahgst23G5jeo5M8bPBJJKUbx6Bj0SVQarDrBCbogkVlgiDiMHsH11WAPYMcUQysV6fkwqV2fTqhgevP621nJxl1Ra9U7Zo2WVBt21X1YknGksr.IfEnj12A42M6e6BuhsBbN3Zb9ainAlZXp8HtR0Yw9FJzycmiiH2oKsrxu4VeBHOWvWzmzQ1FlE_OxkHxDb0UtARP9mlTeRsL9Xe..sZ3EwvrYlJMmB1tW.OwOK9fwwGQNEiDcmfhkvcOmRqisHT72rsqAAxH8qp2UMIDk28r.KgTAUuohPL0TWJ.xMyN5Ppekn332pPndeSPXLmIXXi8GV86pkOkEwf3rOeBsBDWeH7sqYrEEXGX6WcnowAswyCD8QencXoBPZ2Oq3KA"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=910f8c14accb05e8';window._cf_chl_opt.cOgUHash = location.hash === '' && location.href.indexOf('#') !== -1 ? '#' : location.hash;window._cf_chl_opt.cOgUQuery = location.search === '' && location.href.slice(0, location.href.length - window._cf_chl_opt.cOgUHash.length).indexOf('?') !== -1 ? '?' : location.search;if (window.history && window.history.replaceState) {var ogU = location.pathname + window._cf_chl_opt.cOgUQuery + window._cf_chl_opt.cOgUHash;history.replaceState(null, null, "\/post\/3915402786?__cf_chl_rt_tk=KGQteUZDh_doa16qXabz56TO5l7354Frf5cOEioIXHQ-1739394435-1.0.1.1-tGzXPyu3zRdbsiLDShUwTPLH4ySfyw7qtQbZSDG2Rjs" + window._cf_chl_opt.cOgUHash);cpo.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(cpo);}());</script></body></html>
Copyright © 2002-9 Sam Ruby, Mark Pilgrim, Joseph Walton, and Phil Ringnalda