Izmaki and I were talking about the <html>, <head>, and <body> tags, not the article. The smallest valid HTML document is: <!DOCTYPE html><title>…</title>

Izmaki and I were talking about the <html>, <head>, and <body> tags, not the article. The smallest valid HTML document is: <!DOCTYPE html><title>…</title> If you put that into the validator, you will see that it is valid.