Very often you can tell alot from watchin pros in other stocks too, CRM bounced handily from the am sell down to 155's early so they had no fear there & AMZN bounced too.
Also IBM , started nibbling on thursday @ 185 as it neared the reset low even though it was an ugly day you start looking at these low retest & RSI30 tags begin to think bottom is coming in. When i was looking at all three AMZN IBM AAPL swoons friday am was thinking this is the "hail Mary" moment ;-)
Trade the leaders , UPB had a good instinct with GS which has been a bouncer too, check the FAS chart.