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-671885643638.mit-edu.top/post/1389267504

  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-671885643638.mit-edu.top",cType: 'managed',cRay: '9109e71679cec991',cH: 'Y9VdTwY1E81w4YdptF13LBb.z9q8SSAXe3SA20_0fz0-1739335248-1.2.1.1-iuK5uoRICj0ZdYh6qmug.txtr.F3nLVt3pNTCbjEVDgLb2OiWBFNf80O4_R4LtWt',cUPMDTk: "\/post\/1389267504?__cf_chl_tk=dHFUCUBI4Zsl7z_heAHmN3wjqzcHcnu.IssWNfhWCNE-1739335248-1.0.1.1-J9mOOAZF9WKA59v8N.hi1y5XXUqh5.jqt_qbyy9SR5Y",cFPWv: 'g',cITimeS: '1739335248',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/1389267504?__cf_chl_f_tk=dHFUCUBI4Zsl7z_heAHmN3wjqzcHcnu.IssWNfhWCNE-1739335248-1.0.1.1-J9mOOAZF9WKA59v8N.hi1y5XXUqh5.jqt_qbyy9SR5Y",md: "bnmgSZ2V8RXv8XpNrBRg0p_8sUmM2OVbTGSKk18fA1M-1739335248-1.2.1.1-N0znqLcFcgd25XuKendi0IeuZoMWBsJzMHRuODlClRk5z3RWSvPnc6tVp7d79VXotAu4UcwC2AH1LsH_.H0SbgcgfQd8UsiZrK9anqqRjmZJa_kc5OkBYMjWuDTIqgtdwL.bKJekruxTsWpqfZAWltGkix65mGLQAt_OwSzlzx6pWhCeT2b_7T9pnm6E7jgzPwsELsRoLl8DRkhfaL6aGCmX5To6zCQ3367fbNDZmCfwwm3CT_fzKw2YmvJ4xXPvVnkg_Y_907xWH6sKiNf3kqV9.LBiDW7.4hkS0RwShuZc2Ox4Dh6g9siNC29rN2ByBjGTe6IYJb6xmCvu33GDxUY0KwpRJXpgbxXN7Vx.W_P99SWPYUfiZ8p9ZyFGc2lgPTpQhJqcT.Oq1y4Z6Q5WpQHg3G1jCFURAqSVE_IYosE_xagwrj1Vs5B4ZhAYvwuHzaVA6RtVQ0R_ULXraJ50GPSwyo7hjnsjZ2UKFDx4prHEuW.NF8nadzH2RHP5wEAANQAkTUVjfBsgKE71Cvd_FrMYY138fWsgD5haroTz.mapAvm.mu2e3tT7DMl9MwYrCCPh6ZlhOWfo1vt0C1b.lbd_tTqsIEewO6z1mGn5XRgruu93l7N0M.48CQXsMMnduq.Jp_9oyBFDzHdkGCXxwPJGtPV4YivWOeZJKqVmYg.aWBgF.zcoPAeJF1f9FNn2YL30K4BVBnJ38sCqBKks_6oyVRPMEF3BOR7GkV3v7fJmbCash.XTywnMECWIbAYFcN45vGziC3dA1ZGMrGViZ8QvOMrE.ZOUnzHL4yj7wl81HpHXszw9MQXfeUnKSLqNP_fb.jI4IEJFPWRO3B4HKF8bDFytDu48UdFIXe9dRLCq1PsTDHrOmqd5LFpEd0b3uW5EgQblrSho_Vn_Ad5OASs4FYHnOfLWU1cgUVHWR0gZQ4Vvuzbz1tUiTJ.KAWPEbuB_CBPi.66unxpKZ8qX8YYv6UnZCHrMHIjWFll26djZdQzixNc9zAvMvYm6x0HSqifumsHkp7syBA0J1TO9p85DCvWklo1jc7lO_dxAW3OXvJXNtPlhvIWyZNGw94hlUwFoT08l62Unp7QK5w_RaWTrw1T6Ht1hC8BkqOon0NWZxFCGFHEMyzxltX6328z3_Ixt2DKYSqRWa3L_zdNjzknBDXRzNpLV0GJbJNJUBGwGl44nelfkTIpp_HvrHCrJLr1yU12cW68Ui3vebWK._xv5FWSt1nCbsq4ugvhJojyXcO9E8MiUeaZ3lr3wb3HKnMDqVY3F29uP7JUPRAqPCBLAoVFo.cdIobx6_pHyL7fW4HffUXlbu4RkEDa.To_HRau0K9LA0DnYyTNBSPn7aLSdqPfGD10pKcTOebUQzuvHqna74EIRkAFZygIP2h76tBkn3JI2PnC6UkXeyVJmyB4zf5dm9T4M.2shPG2CBc3_gzleusG0ksmdwjavX1Dz8.p.x7z.E2knUvNGD5P.7ZtQ8a7Z2zkO46JjfyXOFIAk0wodYMv1WpPGJfCtzkeDx9AJG3L4CKuAdjASXZRZrY3dpQfteqJAQ775mJM4Np1E4qTGk3Tm8gm9I9wmJvTTvKCSuEb57qjsTAKnv9IN6XVMFEtu3LtS_BKBt0izhpAIJ_JhUWtoAK_MCPs1py_WjVQ4_4V8lquvsBuH5CrFQ.nOciUuEbC3wKyGAaBQn.4sXhHnzOR.ClMdItF.WzWu5UIYI8HUHMb3TUsyEw.VuKUytq6xJXkbuA0hbfjqlY6y4nh2C0tlWltdqV2AdkxuOYDnolbzNGCTArx0B8hEcxGfk.BJRAXkKC9dEEQ8d2UiJ.tY73XLw2Z3j.xx68U5K_qiJrHNlPVS2hhC02m7Nhood.fgC_V51eUQD2UCanH7kDe5hTybROUPKGtoZbtoHKMsPDj73fO_39dWJjaYlMDpBFXySBGlkEkgGJPnInIkpeITvr.k6_AeawbGk7rER4xBtAKd09LK05IHvbXaxCjcAFNtt95VxAdiTwQdvybPRyICjsBucIIxuvXNRe2SFn5oIXA3hanUsu8A_cGr1qm36Zqd9_unzpoQ3Pb_4FYaBwHRZFXsr5fsoL7bj181wMT6texmH2IhK0JXZIp0CBeUFERBuUc8cpLHLg0hCXMx5NMg4FRsrdi6qrIR7gPAyZ6qyVebql0cymNECYwn6Khmgfp_0cVozhz1pOnY6x6F3LwOSx4mpQlRG6qS_q_v",mdrd: "5jZanfuWMyp4HWVEQs99du3PZ5uWCQQ7JU3LnHurW78-1739335248-1.2.1.1-Ao9apbawwGG0qEwXFQuFYpTdbifVGeiDS963VBZQTHvJdt6MkqH0jjlSvJEV6YJJKjV4W8ZZtbN6SvhxcrXOvNMRwlOw8hcyZ_vFqYYgCc37hRJG6sPFFOr8Nn2eUyJuTjkSZDYkvXTPsxd4Xh.QBU84ninjvQufNLWeCKzDJpjhE9x5VmcIzpOnz.5qT_vECIY7EIdZWglHfhNhf8rJLxocCsaVVW2jo7AtYPO12ZgNtXRbrG9fFuCT3wQkJzwPBtoGuB40oJazmqsmUxDY1iaynJ4BZT805mvxryaZO8mVI9N617d6wAFnyvsBIuR5.aOOkFseB9151NJkWYCP7acC2h6LnmDs6K5lBGGrbUBLg_MNea2qB5W.6CpaarbaucIs1XOhzvrEk4A08_G_Rwq3.eGi.yoFb5wbhHh7AcuzzEFS83KAaKjWwClNh9FJQVESjIS0DllHTcMHbcUfaQbHAFAyiY0VxvieNQq8sTszG02CFmI7nvW1GijvCpXyybmmaCITR92FqUZlZjYmb0uFJwk1ZtX0zg_WSsA1D1UG6_9_JGRZ3bKrTekLeB9Ra_7hb0819kwfDQfqC5TmXSH13NpMgajegARYjE9Sss6baV7tHt42sqSH26Y4O67pTjmSMbsn3AshaYJxF9BpCy_k8muUBRMbCfs8QxXCwz3IcWLW7FT99.xUImTOnwy6n1xVUXfyHLrr5rtJ2MVzYKTjDQophhUdpvxBLqHSj0N9BrdZk3lVxU9s7e82f6idTlm2.jOaZnu8kLHoJz7sUNX0x3Qhueei2wxCHHDewE47XrL_YmVmvSBzQe4SM89GGMdnn9C0f9LYRtGrpCdaGgrBsw1lCcE.DTWa37M5XyWIQd3WQiBOB50wAF4YFaIP_AysIQNWPEUut.LEFb3SxqEhmo3ddl4LeABjiGdgZL9ZlzTPTFaAhI3Dkqhl4NfwI7EiaOSknEuRtxe2aQ1jdQ.SOAG9iaFeRG89heen2zxZlQGuFOCAChrviASNbGNspZDL09zpJEXfP8h44UrygmfZj23PWMMvBjtbB7yYt9ILLsSPc_vKWK1WYnhZ5gnFm.DsyIxxdaWuh95J6.E3I1RxIWXYG_utImtJ8E0HbCBXRzf61ceTvVvWnai_Y2jNHuhukyOlc7xMn6kzlpweeusedqfTbSlgg7MTdHSbP2Vf7bUglmn3tswmy6Y0EpOsHEpKrdTaTch_BihTPEuULbldgTmxnekF6if0vWLs5FPTsYnEdrsk2EhM1SVPuRVvASMEz1tDKY8lQh_SOOktBdirdGQsHwXwGoZoVezTJIfGmud2myWEwvTzh.A6gf55X6U81z7DTr8OV2Q92NeJhJXq3cWpsU8dM_q7jTdBwce070CgEZDoJxXS2F5qHgP2y8R5LMmFqROc7VUKb4uho4.SEGngUth4gWJabN3sBaNXoUcz6nGPYWOFjVrtyGa4stxo4h16xd.EI16ZoS9thg6Ps_2HOJxB_IX4INK_sXuka8AeWZv4ZwcEDaQ15NSEa7PISQ56s8DxQ7DeGW6Bw_VAHOcbmAiSIfn9ddNYKQwiF.eq_k8yz46DJNHt3FDYxF2WGN7osK6jFhrNMC6te1JV0QObsbEdUv.qESDJibrks_sYQyAV6WmgobdNZKiDxpuTPLIO6Vu_NtqAwZsJ5znoHweNi92VNyLhpNtKmOKZs.6TYz_u84QYqI8fxpsSxxVL1kxpLtYVmqSTZjc31_dD_JTF4jBkA.zCqgIrRdaQFYSOkGVAi2gkD7ovCc1IjxhVbXdAv3HvMlcoxDlu2g"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=9109e71679cec991';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\/1389267504?__cf_chl_rt_tk=dHFUCUBI4Zsl7z_heAHmN3wjqzcHcnu.IssWNfhWCNE-1739335248-1.0.1.1-J9mOOAZF9WKA59v8N.hi1y5XXUqh5.jqt_qbyy9SR5Y" + 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