Thanks, PDXTabs. I agree that is significantly better data. And while there is probably someone who answered the survey and picked sell something because they'd go in the back yard and dig up one of their krugerands to sell, or "borrow the money" because they'd call up their brokerage and take out a margin loan (like MMM illustrated) neither is likely a common enough situation to meaningfully influence the percentages.
I would just add that from the same survey only 14% of people said that they couldn't cover a $400 expense right now (which I think is what the much larger percentages sometimes end up being misinterpreted to mean).
I agree, it sucks that ~half of the population doesn't have $400 spare. I was just trying to illustrate that there is a huge difference between not being able to come up with $400 and not having $400, at least in practical terms for paying for a car repair or doctor visit.