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-731054163497.mit-edu.top/post/1579286043

  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-731054163497.mit-edu.top",cType: 'managed',cRay: '9110b8d77e4f8848',cH: 'x6mUeXwdx9W8RRSGqnjbeLFcAIjTOEpOX94Rxa9uBN8-1739406754-1.2.1.1-uevd1yquLenmR4iV.wfyczoIstfGAqXISyJH.9EaQZJ8VAJ85Rc.Gc_N3.29scFp',cUPMDTk: "\/post\/1579286043?__cf_chl_tk=xP9tliAn9qIlDiH8Di3LcvDdTRCDF.CGx1i7.Cf_wrg-1739406754-1.0.1.1-fzUSBA2K2UZSCqIAj4N0zNcRzbeC1PBr9YyBN8kztL4",cFPWv: 'b',cITimeS: '1739406754',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/post\/1579286043?__cf_chl_f_tk=xP9tliAn9qIlDiH8Di3LcvDdTRCDF.CGx1i7.Cf_wrg-1739406754-1.0.1.1-fzUSBA2K2UZSCqIAj4N0zNcRzbeC1PBr9YyBN8kztL4",md: "atN43sEIrXjGDe3_1934hkoNWmsaJ4ezsNf3b3bhEzg-1739406754-1.2.1.1-JYcyiDfpOTqD3HGVTjma7AsMql90VsnisMVTjNcNpZHRGZV6TSm0SmM7LzcWzzqIaYhtJJS8DU3ymeJZ7FJniS8gydtYGM_T0w51vpD3mAGoaxBWdSboBn7tDuVJbtliZ7q2aYs0zZpx3Epot7l6oBcXpMqtkMFA9.Tf2sG2gIGzzgIozzAeAYh__4s9dwU5yiXObuQKnzTvlozyMqYxmh9Tkt0fsyED6yavToprawtkeCHcJ9m6LJ3vEqbARD4rg70FADbV_7Gb1MIjtGpC0FCXlCTyiwaMHZmhbJfHlGX4HuID9AJxmfL2ep_HVzTyqoLSKnOv6yHBn2NybN0Pg8vEbNUUGOt14x2t652jYM7QqPczvbKINR4Sn65NhMapL0Ji2Twb_2XUh63s0.DXfu44Kt8zZW0V41OtcM0lKtoXosw.J1AJPQw7x3uJ_1qNU5GWewipp233ucl_6r_umUqIc98R4wJVmCVn8oVAy.aZZFV8HbJR4HYDIxdDGD38NSxo7Oo3AJFYaHUqH7sHDZuYaWwTfgPs9FE8.9BPWepxRtWR6zMdjfJDafYiFEblIyc8dvFvOUh_HbqJ8fxcUQ4ICjavedGa_r31fdgp0yJCbBZiwrzdqxrIZEptYbJxydtCdmvshYe1zTZmFMbq_.2LWH.APHNJCQD2D.43Fqysn6yg5ViBcJuA2k_QGeX_wq8ZvXRBxNFQ6V6wWdk6Z0oCW5bo.XOB4ICA5ioqdrAaS0YFzCRpzJ8QAfki_48ImeuO9xKt2Ib_dcPNuX5wcDoXssclGWEH7lp_3RfMvzKx3h_COaEiv_rFq5d1EEc3gugINlW3F5j0kTM2rCp0DgJpvFE2aBIu0LJN_7RsZ1OakIi8hiK3GPjPFBZzZWZhKK4S3adaoIPVZXT5aJqeB3R72vtzdgboFV7SPbGqGFdw9ET6w3G.U32JPuvM_4rGoA0mwaM9TKI_.DAbB1Mcyxq8_UdI4uQRKTVD5tq.H7GefDIsjUJF9R5ijwW0dW6IrK0_rtIRgPOHKJR3Q5hKcUCAoS.cJl29Sp5VVKMZ2H78byArpEYvG_ikG1Aer16iDtkfdseoqj0LEDXCUVLCicy0iDBtmvhWU_qXWdVDe6RCX08yICRobik7cKexeFdbfxfKjoNZ4e3Os6wTyTygGQNmxInyN25R.2yQtfcLsyToPSO9M43XwL8IwoIbnaVhSBcgUrDnRW2J4AWmiqfqkRvYxMxRWKki8z6mjXllrV3BfVf3HX3XuYEvZECG.qkfmyQCCgsXW9zNoJSAljq62YcRDdzbuoYIFoWbfqkuJ6bG9fiBwTf4niNHSH_gGcewaMD9ABIsncCYZEFuZszEavvkQ.akHw8M4UWZ9aBIfFQ1ev_9QVVVgw9juzRQ1IaXbO5hnkjGAoy.eyG3hnME3M38YWJt._.R3t4FHHVFrqodk9bv8MZrXz_XtGwHEBDfXMe1rbExWvB.R6O_CIBIn2zhn9vVXN6jp1wOho7EhgzEqGNVd33ja7wt2ncWktC7rgpj613fNmMfDBSN.FJcBV9osYQoeofO27ctnZ_Vb6pjQa7s7M_2HNepz36YaZlv9xyZ49ttLDCmBq_UBi2i9gGf3ocRZY01nt8t01e9g277NvgSpyD99HYb5QKEz3yKlZz7Q4tLgl.IDwXHZvseOgz1CBHIUjcW75VIBN.8nEsP0yj3ECeygXl4FpyCI7mkMN.K4Excm2Mpmg0Z6Vt2Co8duOZkBgUjwLw2r19GG_kb9IYcEhYenJqkiYV8sKDXHmJTDZNw4WdeY1K.ZSks2L5SZs1Gr.3K_NimNyblcdlXwSJ0Mhb0HYg4mY95PODlZtHAwDrP3DGFtcuEeqxf4c3hjGmVGc37bs4l_LN2oPl.T8YTJDXTi5HpnXna_Bxl9mU35F4tBwWntuk9uZ8rAmobdGdUR6rk6lizlQDkIEvchlOj2HG8vTj5xaEVtt_RkitMLraFSkqOkhwhSU9zWKrxASIceyxldynrSgkL9jK0nxpCVgXs049mp2bcuil4RqRy9Jmi0J_GIr4423CK5qZcS6qTVOR3nQ2G9gvXHlj7kgVIQO8KGmficc3GU4PTxrdQc_oWKttISPS17gJj_kwtCvFOHr2pTfZTPboBzNvwEEmzEN5e8h3c0Lx2qzcZtTsmu9hpIUTnux7nfr3CF9beAu4QnhTw9xqhw1GuOKMrhRdXu2ocEx1hDQ76uU94",mdrd: "ArAN14cU03AZQs7PK78xQTfBJ4exA7YNP_GUZ7UMEL0-1739406754-1.2.1.1-F1hq.bC8pJweL2nsWAPobItY7bnyvqy0trvFf1nR4SLI0boVUAhi3maceixQTbYdjO71RljPI7tF35OstIDXesHN4.ZooOumEGt3ld6h8.gG.WnwxLRCRLLclNeS1mGT5DB_yd9BZdo_njXfuoizppM0v4GLkywpYJfOVKkH7SMl7_MyVTv54Sd0TfuRpOlITnGpWsuDfojyjCFBjZ.Mt54Ug8xpaalviAD0xUMPKVIm1B9JiniE_60PX.LM6qkhejzSLvQ56w0U0VeCdVEeh.X7uuzfDN1bbq3C7lDSA6zNAc_.0uFIuRXkLLSwlQF6zqRRfeSbzOVI3xt0s3EkJLahZly2Elx2y6G0eA9uHufNV4xHHUShjdyZRnBmp.X1DVTIrW0_dUqK4t4gNo7h3YyL0CJh6NOWfst0Em2VwbjsWp8tA2hrtRsUk6Yz3uHVtYcuTDIEdaCYUGASJ.KG91r55CuWBF8qCTSdBDQ3ShjIquWqiItOKh2DBYrhI965q0bmlc2QVaeb9KxPwvMPc8jZWL_a7HnT5B_Irp9IuIOUR6gFXgsUBuIktJLSCpUqaiG_xVz6ZFHSXDx_8U5kvWWEjlnpzuoHPqiSmpTmyUU0g4qJiCKc.4zK1t1GNh3tncnRAu29LLiSAWZFg8Ut6PGoetMnH5atlGVUo87U1GomXZ_m.rTglxlcW5W5Obs5Yo37gc3PWoA_sTLo5A9_dhLPAcogAiQVUnBBcm6KBHKQxzjICtZzG7eWzPoaHFA0e6wcJx0PkducchqeO0btbkvbkkUbVp9EnsjFsRWKAs1lqqSuuECDijF7IW3ZFFb1r7IC53hM7HdiSS.nd6PFUEE_QdXd9cnTU8amjL6gMbdHUCnGnM6m_G6lnqo0ngnT0YJ3V2m1nS6KyKbH3u1meDtIJ4Mohb8UuTGubNuLfgC9bU3.qHYQftIvQAwL1zrR.QLBGBp9KCiH_gOIsbvPd30P09gDU4.Av__eHEeYQxWEu6cllM0AhHLJy5hFnR4U2T9zzuWdfua7cMMGkmYxYcBR2uVMRg5.yqRry9AlTk3GBjkHIgND6sKnBTZvKDL9Tgfra9_aljb2UBqGugUZ5.4aeU.NbtNUogF.PM4LpGo0tvI.UNb39FdW40WtJdsDdkqHge3_MGIWw.axyzKDDzmOayfW4qEwDR1HDYJQetL.V_D04wthMVoUBc1lEkfKJvKcGytEPCguFT1o3FAEGQNb.lXPoT5VSqD0ivuI4V21PgnF3rzwdrhIeivlpkp3jU1XJ7DRufn22281Et.Vhw0IpbCwu_ZaGfowlBlmypyqJTd3tOdjRT04t2w7XXcc1_y5143TLQ8k.EHLZVlzPGZbAsNAIycQz7_dZpXuq0kkeiv8Mn5tbL2CdOrgcp5fqL.lC3osv0SEfd2wiESfy07Oh.aYVNJhJXZyQOljfWIwitbJ0mk4bp813RtegZKCeZ2mcaNfE.mhvLMEaIdkCfKQoaFpAXc4JvFm9ZQh5ioM0LRxTD2WgY.7C7y3ZXF3aiSylvg7KSOM_wjgtxfo4cDyKJQ57GLTNcFsTKZup2sHlmDZF0vA.yw7jSHWXcuxfjaZ28CkRQhnnxsQpF0yDHDEEBFdIU.klD02ipzFjUu4ezYdS5UdjzQ5JCzExZ6Mm7o.7DruomTrJ6zI1jSSjEwwzDHo81JiVnuS_VpHYt39CaLSJBQV.6bZ8uEzGdRGohHsrjwYB2GVG2kq3nKuo.WAY1oDynzZJ5T5ebLERdWekw1fazeao1Z0cbv49TaHAtDFbF5zkYBe38EBWEtR3A"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=9110b8d77e4f8848';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\/1579286043?__cf_chl_rt_tk=xP9tliAn9qIlDiH8Di3LcvDdTRCDF.CGx1i7.Cf_wrg-1739406754-1.0.1.1-fzUSBA2K2UZSCqIAj4N0zNcRzbeC1PBr9YyBN8kztL4" + 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