"This kind of endeavor that is part art, part science". That's a load of crap. Either it's art or science, it cannot be both.
If you don't think that markets can be predicted at any point with any certainty then no amount of "art" can help you.
So what's the bottom line.....what did you make in the market today,
Enough to buy a Big Mac, Whole Alaskan King Salmon, Mortgage Payment, House,
Trading the market, at least daily/intraday, is definitely part art, part science. It takes a wise trader to realize various data points, combined with the emotions of the market, to be able to trade it successfully, and sometimes deviations can happen,
I trade the broad market index, the S&P, daily/intraday. That's my game. For other examples and people, their elements and variables may differ than mine.