if developer accidentally left opening comment at the start of the html. Rhetorical question: Should the browser display page even if it is commented out? The

if developer accidentally left opening comment at the start of the html. Rhetorical question: Should the browser display page even if it is commented out? There is some bar for what is expected to work. If all browsers would consistently error out on unclosed tags, then it would definitely force developers to close tags, it would force it become common knowledge, second nature.