The other reason they're not part of the Dow is because Apple is overvalued by about 30x.
Apple has about 10% of its market cap in the bank as cash. With that said I'd be happy to buy any $20 bills you have in your wallet for $2 each.
Farenheight has no basis in anything practical at *any* range. At least Celsius is based around water, which is useful for a number of reasons.
That's not quite true, 0*F to 100*F is pretty much the range humans can survive in without any kind of crazy technology. Makes sense to me.
The difficult we do today; the impossible takes a little longer.