But you don't know you can buy it for less next week or month....

But you don't know you can buy it for less next week or month. If it were that obvious it would fall to that price immediately. It wouldn't take a week or month. That's the point. At any given moment the price reflects the current valuation of the market. If the market thought it would be worth less next week or month it wouldn't value the stock higher than that _now_. Get it? Charts are all hindsight. They don't tell you what _will_ happen.

BTW, from my first PSD purchase in 2001, I have classified it as an 'investment'.

Pezz