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-affc81n7x.mit-edu.top/post/4107395628

  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-affc81n7x.mit-edu.top",cType: 'managed',cRay: '90fca2982f6c1ff2',cH: 'D.2A.5e3QjbYsMb3uAy1ogM2b7rPuoecQOEBjI_9pFs-1739196128-1.2.1.1-gYbdDAEZTBosicjrOLJWJW__ma0nm.bI96D9qefRY6ZO1SokgxBStfZWO9uUBAeO',cUPMDTk: "\/post\/4107395628?__cf_chl_tk=9jmI8cUCNIxlGvjxuXrdsXBhOYxWXOZqCpsoFGvxlTY-1739196128-1.0.1.1-KDa2ZFqzm_JiGXIpKfhDbI0SQ7JY6mYvKhRl5c8eb9U",cFPWv: 'g',cITimeS: '1739196128',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/4107395628?__cf_chl_f_tk=9jmI8cUCNIxlGvjxuXrdsXBhOYxWXOZqCpsoFGvxlTY-1739196128-1.0.1.1-KDa2ZFqzm_JiGXIpKfhDbI0SQ7JY6mYvKhRl5c8eb9U",md: "YIMCAn13Cjtwv7GofZ3LwwAX4M_6UxGvfEgU1jTOTPY-1739196128-1.2.1.1-EdhDonxgTzg2APLkYdK7zMTbQK8m7pAkPZDRPbAWcjhPJ06YNCMnhe7ZQn9JZL7L50GkbdlMfN.Nxp.6GYQwHtR0PcemxoYhpMf4KmSd64hwtN.a5ExJP6t5uZYEZE_QdBjwyUjxypBr_I4Zq9Nf4wSP5L2KJhqvWFFMAHsJuzdWjtv9y7PE3_B5DPfMi0KYpx6ImGOjlIm.0I7SfaMgtTLgTS7L9B_fIhThxBcfdY_48MZI.uQe3H_Df4mFFk9aBZSZ26vIm.wHUJ3NR76z4zGHP4fXByq9JF9Cf3plmhV8FMwmMWeM.YzxuT1CosBn5j9Nv2fpe3f_NtNQWgpNidykn8UHaw1EbYW7Gw5b6Y5EmLSH6479MqI6pNfVzAXEludLeIXEJrnyZ6zXuxhp_snWzWrsIITHFLDKV1pc4QB6xP14IQrzp3ca8pQA71Rj4x0tUJnBf2MunylQLfv9luvSCw7ujtdN3NZjKwOWlOjH2AmqbT.8nLnfQ.FDaJgX_Zu14J4Cok_iM9DIc22N8FHTlTwxmlJjpiPN5OyaisOlZwoznNptT4QwGM97Fr9cjfFA26.6vxXHSb_NwT7d3LbNmzYfuWgveeYw0HQ29Uay7PCH9OB19v4V.VB1V9VmQ0bb29NJs_vshyNUeesLZ4E77ITwuOJTNQImrTE.GcI9o3KO38gNwuAU2koNwJSf.25gv4Gk2W.arUDKeRp2bljwrhD4azPnRIJ5W1vvFsJXEK3NkmtABFTy.2PyqkvuK74qeWcW7fhYm.NV5sJgPSLG4v6MlzpTrj25lhWH1IXrSIj6nYLafEgzl8fkoJFeuhjJlgvWsFAGeIG0NzNHTfMt0K2j6aQA.LDUvgJCQZZUmKiQN2aB1vhg3kQ0Y3bubTVshuRdceOqq8d.QzkYmG6i37JFM7eE4HqJiiCwg8exp3KrdDxXd9Rl6qtBFUzgzp.78syacqFewXZJa0WJlsCbFzb50eeACCWdpdRiGIajBm26x7gadrMoQstR04xa32E0K38ubAXzeDKXCEqW1zjE2wrcOS8btvEgYE8fd1mvYmeRAfG2JCwoekP1Baw6A72rExgD38hMuWxg9V2tfJ9gkKowfI0V6nuzCOYIk0kWIB6tnx4_nB44x74LvuvODn0uOB2AH0R_d60_5RMxiBGckw.PAcsUQGkHPWT4_bA1.3q_1EBslmX0oeG3Eb_bGYTzgqIiuulTidt3uLes24raqR5HCgRezuTutTEmeBjTrVijxLrFnY_6QfBoZIzO3_1E0ozCCaSb.9a9eJ4TpW.tqCXi.0Zne4XJCDC6iz6UWugZekVshFFOAR3rr77puSeJD9ZaL_JAOpFzLSO4UOWxQPgPascwVA3Z38XUg3G_AJABJr388B.FWuwR4LuiwXU.7TtLGa5Qimp6QO7x36bQ.qN.93AyBpiTfqNl.M7VdDwjREXfKkMvHK2gcCpS9VkkoR40y0OAgNwnL_ofH5IBejGwogSDtWRef9NzsgMe3WKz6eqAYhGI_7iOtGRG2LKOK4YrE.kvIDnekSviMOerBWfbUNv0d760DUKAHmpM3GRQHdzkFxZsydt4TXziEblq3Zz3PBEnGuU8xpr7fb1QWl3lx40mq6OO4jfZkeopk.nqf98AHJiEj9iLUAylIucAVWfKGc4ZyVqpy3xbgScBbgutnM40Z0LJx3Id3ENTMhBICynZnNmBRjVCSXxQwRp10zy4z3I_XN8ABXoUwzXeT89ibc5vtTwSx6N1G0TLuQW30mySgIuGrZ5rDLi6CKzwKRNxCk5WeklQEGrfimkGQ.Oc8aUCYz4dDSTzYWUjqErnoQtaoNpP8fH7SJoQeyc7YxsoV9E9AMQKK1nzF6T0nabIbX8qFcSVBD0KRbKYhFw8MOlsjoCOh0TxZULUSd3Qj1JtwhJg.qIbH5YyH8U7U7T5Q4BD3yQRRsMErd2c1Tylk0lG9fY1KLPvB4iYdVkA9ys1yLONlcM7Q3OuqOnkh9UECWvsvWq_DyEmWUYLeNYlkmMrvmre4yVESjqFKVaUyrkQfIGb5sFvdRjE69Gp74lFWzjIrJgIFi96Jw_KLaUgEYA68JnUdJlsFtm9eXJQWwQxV_7FPsgep.PNd8Adrgyryx6iCRKwyHQH_gXC8Czk7uKVffSKwl9Lm8V8bNwMfyJIa.y4RuB_ItLV8E24IzDoXkpzvZPgBc8MbFICKzpSfZ.tqgGs.P155OfR",mdrd: "X8BLuIPv7gvqBHfl4QTrTClsefH8SIGpxRoPbsTN9xk-1739196128-1.2.1.1-rnGbamMpXI.CM_3FOksy0Uv_J6niNnfSgC6Ka0AR5_NO9wxy2jTz11MU6jeCQgA5ASynavJbIlo8Lj0sdtRlXtcLw2IA8_4XWPdf1GKi6d_frS8HCGnJiYbz6VfdqaAF3ej_1tRVPD7PfAlZG4LpZy7NrSEHrfrb3KEng9meljRgfwOq9zZBbM3sfqGJwMc5P09PKcbbTN8eNe7Xlyi_dMkaovgRFstLnbdfMlfA6QXA54hx2_caDSIzC0zzoN5JYaDifDV_HVZFMrBnnsYwXsFH5PleftJJYLmgyN55mVqeKowuvTZ.mW0xQjyXr3GlCDosScj8ndB0FCRrS7WoUSWSkRauMz_EhNLN7Wmjhn193WeVKOfgp4CdaYiH44mXJFTZgb8P.jERCdXLK0CeLsJ_RAXWHyKalaosncQATr4os8sXVu6uwwVVCxuORvQ.TcnyjgdayHwdGep7p6JQQkR8T05CzOW64ZskAslh.uhSGejNUhFPA2QqFJocvML8yXRpgjcT_JqgEmrEVdRCJOSP9L7sT5tw5tqFpDG7fjRuiQp55YKbTBuqCv6dEMirMxkmzwGfRBU8oseOHLqJwNT3iMEA9nwInS1yoCCyAOkJP4Y5CUZ9ILIVIpMkP3oX9q.S86wvro4yBnaykjPx9n_JRNVGqh7FShLKh1qtAu0rkl15bJ7KBNtUgEJmjgGkiLEtKDYgBW1ZUyullyLJRho18SBx0LDVk_jI6PLdROEUbAAfrH3NnSvmoVdCQLJmbwVLhe3KOvkRyZK5mh1UnUpge1EtRDSROez9twY2sXo706ANqMJB7jwo3_0VUM5kP0GlAeKkiPRkXmh9oqaedYkKVOnecD6.6kl7LaqHfLZVb9HvgRhSTp_.sbwz5PIzclQt29xtw15gjO36FGZVDlPHZC6BVpziQzGkT4fhCCrJamh1MkT6eq.ydvp0x7C6v5_hVhSgHkXi7sfKfvg28oCA0KgRyB3PVq1kjmuk8vLSl33dxnp6rYH7i5Tg1GS0l7iTCH0XcgZqo4JSbd6HfLWmcX8ETfkmfVW8bHp9pm4LexCN6NdK1cy_i1HJgL0ACbJHDhyThoSKKTmO9__eaNlszkFPZ6pAlPc5_IbDcbWhfv9Rtu04oFlXdveckYEUl6fiCeQvZmHlCHp0mUd6JwYKI0PxSa6swt_8FKyqKS5u3hHe3AjB7djCAlYzXSavYfy2JxogIZnjPFsWDeSwGzfV6bPgh3PjrcD0SSKtdTApZVgoimugEvr1ZejSG4iF2XTHNXn_VMLdWG_qz_6hHuFwglnmSo0ctxoXDoSxbuL_Ih.kZT1L8j4ZWWOa.yJV8MFGGa9FVfVMkKj9njMTW9shoRZeiSiYAjDkN1ydFHlV3B4QEaoGQwHmWMRXcWRweDUgeafi0vuNYbJOpBtdepNrukEHUARB2Kj8zDEqhqzDp.2MWtGCXDLFutIo_wLMGmx4QGXAYsMkF27SJmERcLO1FpvYrNsLcy90OiqEm5iKcKpxvptlaspZNgnjR0dcZxlUI6cPaasSm0yocXGGeFMQ0zAxUsALl5KCYYqJYTJXfB0DkV5s8Ah9J88Gi1sAgPxGv1pVM8gfHMQ3EQ6bnVKCbPUjiBlhKGDqs1c2uQ5GawKVXj1v3lh9wwdhMFG1Iy8FEsmHSkYim2EtevMiGggHRwBvBpkO0mdwbmDganSfJr9_V6zr4vVPeQUJWiqBtJxeytnieJJGyQWDYUXHAydw6UG5bSZgacSILT37UILBuaiayghIHCHl26ONAIoQXQ.b3xLl.dbHQv6u136deTjiFXPnhaU_lIvMz74sm2g"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=90fca2982f6c1ff2';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\/4107395628?__cf_chl_rt_tk=9jmI8cUCNIxlGvjxuXrdsXBhOYxWXOZqCpsoFGvxlTY-1739196128-1.0.1.1-KDa2ZFqzm_JiGXIpKfhDbI0SQ7JY6mYvKhRl5c8eb9U" + 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