The 'rules', such as they are, did though. Bubbles don't only impact people who buy into the bubble. It sucks, yes, but it doesn't really invalidate anything.
BTW, I've never heard that "buy as big a house as you can" financial guidance. What I've always heard is more along the lines of "Never buy a house as an investment, they're terrible for that. Buy one to live in it."





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