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-afflip1et.mit-edu.top/post/7035149682

  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-afflip1et.mit-edu.top",cType: 'managed',cRay: '90f37e574cedc5a7',cH: 'r.9.Ni8JhuE5Cmx0hLLnF8F.ZwLiSa.7Y2hXSHwP438-1739100271-1.2.1.1-io_LHA9U2j7C3jF5XPhQeo73gDfOR98x3zEdTfzULpC3auHtucxHHi6ZlbojIJAx',cUPMDTk: "\/post\/7035149682?__cf_chl_tk=hRsjJVi.1OhcBMhQVOjhuqRlHjcQXpWGeU7Fqw8upt4-1739100271-1.0.1.1-Erp8OPczJ04J1MYBNxbst3Aj6ounOhgJMjms2_Y.giI",cFPWv: 'g',cITimeS: '1739100271',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/7035149682?__cf_chl_f_tk=hRsjJVi.1OhcBMhQVOjhuqRlHjcQXpWGeU7Fqw8upt4-1739100271-1.0.1.1-Erp8OPczJ04J1MYBNxbst3Aj6ounOhgJMjms2_Y.giI",md: "_3NeWWtu3Xjp7P_KxQPDHelgML33fVihnWGCi6MniQI-1739100271-1.2.1.1-9MX_7AqMb0jibARWVWgnCBNfnYTGYfcC2jR8ccOsevh.xmmxR4LYh4_kKzPEuynfJwjMLSwUbpGRPmlC9ZfDb6ketA2rN3VSDKMXbMW5uo0gnxp3tyuaY4fhKTGrCLymj6HZYQRSJ.exyeffvGTWbl0_sMvKsEY8PrlIpTAV0iOoulpzneoB1QxlQk9e8nWN88.qJzTK609SlYqlh2fzyiTrEa8SEi3kz4i0J0jN.fgcT3Es2N6k__Srdhy9_yq9rvHDtHWIoKmegteYZM1K09Hy8AIfS3t78NL_LZV.WgcNT1B9ZomMoVA3.5yIizPkzLTnML50HX0aoNNEfYrW8I_dfIJMnue7XeYyUUFYxph8bMmx2UADlZutR2aBLX36kpyuCpYIoAKNdpVtKo0C93lkfkjV..qkGHPJ6D6kdFHSch6vjTPcoBn3Ccq1b25XRmg4C5KtNyaJGadJqfzpJhrVIeUfXz7BySrz7ht_TBeLkgIJ_2e2yH9MXTzl2OYDSDUpFiATYCLhE1BUpVw7hL2pTQpWyIviBDwuzDbgVhHxF6kRi4UoX6KIQ8hRxVZbSbM4Rr5d2fitLVuEmJ0dJ_nUZhvolZa2.rjelUVwqgRNqzMD_vJSEeJyPdL_i3tbR2TaE.7TnkUaQoQBesNotXOYJp3_e1jVsQ87fSBQ9gBuf7DUquY6tMAogk0HgSEFTONCAn7v5HYh6M4POvP1z_p5p0Scfepjl94GtJlCpBiIZoLlPn1fiex1hO4LR067WhCf_052BshWdm36sgE9DsMq82LS2oGruiIjqSGgDNmMXod5UXJHSAQpOCrXXVSHYgUVZuhpXMdHwygqReFGbnEj1nKUOUF7uEHrKb.SaPTXjQe8BvH9xemdJPwLmI1MQFLJM6fQQuhuDfUF16wcJHhRFbhgBigFIQVXz4iOeapBK.ZvnHVn3FianqCylwHmfvQh4CmgMk3IvYIBFSfyZdorHzskYH.lM6DQ.MeMVHlWgJn1xyh2v67ecYQn66sZ_HjFO65qp6HkSZJbk1S8OfXnKwvNGn5rSFXdfvLwNEUfZ2AXNqjIcyV3JjZZXMbwQlcKfw6ryYWCP.HL_Ue1g3UkOu4gJ8t73_oYK5SEKEUcirb00t_BW7fLQ_7XaJ1Z1ZVI6j_V4fNcLTB6qrlmIW1Or05cj4NX2c0q4Zyz8.aZwqy4fIGv6gzi02ObaJ8494Lfx9lI.6Ay3WFLqxPBO0KsYfpRN1GXX6vixwuE.DREfLbD3DA_SgwlJBxuOuDDj3uMdNKsN3fUG5GxI4kyWBGhudRKzIqnGdQnzqDJtQoTlI79ARgamhPgMospwmLoUHQI_v67p80aWCutGvVSlgcNRTGtgb9HKpCvqJYrJaE0JkjAySS1eXfO4.gDU35nzoZVNBmwjJUV3aEU6QoZ6scHxNnNGA92Ots2jtsQeOB6.B1EOsSI._9hOmNTbjxtr1N.crnMKjXeXVeWVS.HQLUtcygwGk_yk3qkQsbPDqmct2nrUqC0qMoQ6DbkzDZ7u0taYeh1qBrBedJiL7GS5.c2EcCtB8tWBuTU.gy7848L5HfpYMrd4f9gFMtUpooJsTP5yx90VaJka1I_RZc4H6IOr41MMklMjdN9hiAGKApMJWVLwM8Nz5EY.APFcOKhzpCcZ5X2xdKdh.VyoQq5v.JDcmeKTkxxqfHxvqmiT4BTzzfcFsZ2bFlBlPqRxTDi5JDT5CEMzJ.Di0PSj_YQ49ckPJXw_.91EwXVq34I4qO7SvRV9.BBKhFjcqWW6gvthEv76FvfB2pk.OAWawdh7rW1yHBnzXlVpvGUy0yIUjc9bO7YsxJ7J_atLuKL3gD5QkMr.FLNtm5rqBBY1bLZkjkwwQOwSlbzUq8exbiSKyWo2ajYelsysmkkDhlKukpaRxuo7OWueFQd5ho6uk.YXu.czuzhzomZwA8NktzObmjgLRdv2Q6n3ImZMWDwJvgicMMEisqIhz0Y5bWYZajpW2ZFSaDi8UdOIrIdMCazqUN8B1HsGwcOPFn3xWdUBRJFu3_NI1b..3cMZuxvOzFFPzhi2JWTPD.1ZWYDMyfz9aFcczFpi4tU1N2ReyYCpKWQOqUH7B_8Ir9RGJ5WffjLQsCyH_qhFen0xJ91yt.aFBgtAhSr1WWz.u7ybk5PqAFVdcaBCiKj4CKczhmjA4qfONhSQrkc4E8J3NCfSsD1Jn6DGif55cscwXTIxx_NFLnk",mdrd: "rBjFwcFxZZaOTUoXb3ilotIlSVjktXFhaKvuE9fUOow-1739100271-1.2.1.1-Eg86vk683QQ94p1YZUyzRA15zYi.em8Ktx_.rYycTQj2s5tXuhyCNpWdhh7HYfGPV1JoiWH4HJ05ZNaHwLHM01.PIOENWzxgD.a5RIWtuAFv0FfUsotvVB8LQy1WCM1gjaoDWl3ohU0voQ5G9x_z9YTjFkDyiGmrnstjbo0aA0itdy.Fhj6x7nkwtKKL9_Bb8Rhf1ucz87DcDOjUwBWX7WhcUYyzQGqv_epszX96g8wLZ.hNrq8coqHw2Ck8Ly2Prw_i6t9hsn_1hz2.bQY0n120rw_JCKJu86bcmPsHYWYw7q3igCUDW5Xz2BbJm923pnhgTdBcFRS54XF5f7ToJSzT0FeRyAaTnnyftzgzvpLYT1sBKFvrYaaWilV1oDnpVkTvcfpb13e1gDbvF4q8689WjT3l8IwEoJ7AC3TzLsfltK0Vfa7aD2miBWOZRRFWlmvVxQXTLJb5UVRMGIdF2YXLe._moDpQf9sLqO3kz0LcNguHcV36JFMkbvLKeX2UPnOtCTRWcuSaAiTEgXOquvishlmSL.J05eCVMLp5b_bouCNNQJGBOdioT7Ne6zxhRqhUYYZjNqrKjz4QfZ9xjU6IA318_Rg2.wE__Gjxgvhz88QlJxv3FXm.RhD3UCKQ9_xBh8PtWjHf5hhRZwFrjn.AmP8WBYsGpcqGIcuv5i077afSwhzeeqcv.wGpMPaHV.pEvz8Kp6CRbi8UWkUZcDK0CNatrOwH.o72UB5G.DeKd6INlTAImvHhSnR93p3toi30NgDme5CHMz94HHjAE3M.Z5etvIuagQAx0mv35OzwSwbco0pLmETaG8wsnnuz9DizCWUvFEGbrW9WDiWZUB57x9TyAvHknbMbQkqUBozJMKGHNzR_E_jGXiAGBhMIdp4fz3NKaGnMjAbAol24uL7klvZ_CJRCBx1I6Aw7DXBSmEQ1QxvbGZOdp4O219urAzo39l6J1iakbU0Py2ZIXls0ygaFxEXy8xBsLH.BaXfqvDM14FwSAfFgL7WMTyBHl.o3aAB5AlXkkIpGnf8hkqsGaXHKzAX50R.jRuakCzWQDx8bZm_2inA4dI4k0VTgYHiB_9p4dPEihBg0NnxBwLY2O.cgYIhVLcd__g1FZ3PC7b.159KghrtmvuQZkDnD.UkLcieO4w6.C8QKSGzqHE34AfNWWUveKx_wFmFniM6YM6aI_OXYJBKZcyVDzmEoSKAPWPA4suFDA13P2HsSGtLjvtolkaKyGvb6B4sgsvxxgPCSonz8nuXy.flJU1qlSRT_lO5uX1e_RsdKJ9sKAse1yx1xpdMit7JZ20ZkjPKnemeQtyVOQZnRdP0SG_BCLLV8B1sfjlWicvy.4y.GXnHprvIm1HjSA6CiTs0hW_NVzYwDjAgLuH8Yz7AsUP._lwZ_EztyK5YXmb7yVr0ZallJekOSWid4NIOvIjbKC6UuV2o.Rkj3w.fzu9Nukv2NB64bcvSm1y9wJNkB3i.c8PqkwzcQg_uTU73IFVnYIUpoEUqWVAlpBuuHdKE2J.cxWdIjViZOrrtHEVrdLEALKuSfjZI2_Oj0lGXrWmaMATbiShqq3BSrpeqWrtvwqiPKE7yYmB0rWQZhsC6at98jC0d1u9gSbv0sPfuLlemTOtNQ1p.fxIec6IuQAOF9Tq05cSJtLaOdsCbCkYBjsY_IydxWh7nPfYqihH_qjGQPP7kGFFtlMnN2VL0hRz3jB1iifRzZl8oKxES6CRtFFf2pBcWAzCM7o1x1dPre7H0RhcxYTchb9vKv1mx8vRxBWqVhT3tMq.hVa2QvKRsOawscapdcO0CyugGU0hXpj3dcsLQ"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=90f37e574cedc5a7';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\/7035149682?__cf_chl_rt_tk=hRsjJVi.1OhcBMhQVOjhuqRlHjcQXpWGeU7Fqw8upt4-1739100271-1.0.1.1-Erp8OPczJ04J1MYBNxbst3Aj6ounOhgJMjms2_Y.giI" + 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