Major depressive disorder (clinical depression) can also be triggered by a grief incident.
That said: I remember science labs quite vividly. They rarely asked you to question anything, and mostly involved following a set of instructions with little room for variation or asking "what if." So today we measure the speed of a bb, rather than asking "how might we do that?" and then investigating, most HS labs I've seen say "we do that by..." with a checklist.
Not saying that I do not support said theory, but let's be up front about the difference here.
Seriously. Talking about their stock price right now is an extremely dishonest way to look at it, and saying they are "ratcheting downward" seems to be totally ignoring the size of the rate.
They've lost... 1.9 points from their marketshare in the last 10 months (oh, the horrors!) and are down *only* 44% from their 52-week high. SPY is down 41% from their 52-week high. FCX (to pick a random stock) is down 82% from their 52 week high. Citigroup is down 77% and Apple is down 48%.
Given the rest of the market, MSFT is doing just fine right now.
Anyways, try switching to a toothpaste that doesn't contain sodium lauryl sulfate and take a multivitamin. Cleared things up (for the most part) for me.