You are astoundingly unlikely to know more about any stock from reading the newspaper, seeing their chart on Google Finance, or consuming their quarterly reports than a team of PhDs who did nothing but study that stock for the last year, and accordingly are vanishingly unlikely to trade stocks in such a fashion that you do better than the market once you account for fees and tax impact.
It gets to why these comment threads can sometimes have people talking past each other. Someone will say "You can't time the market", and mean 'you' in the same way Patrick does, but someone else will come along and think the statement meant "no one can time the market". Then the discussion goes off into a whole rabbit hole about quant hedge funds and the like.