one of the most successful fund managers .. Peter lynch had this idea for picking stocks. 

his book one up on Wall Street is still the best book for beginners. 

helps u weed out vapourware. 

only counter to this approach is bias. 

in a highly riskon environment 

moves happen happen on narratives much before product is even fully  delivered. 

also knowing the team sometimes is counter productive 

as u find it hard to sell due to emotional bond that you form with them.

long short or cash. everything else is noise | W3Q.xyz

Порекомендую прочитать "One Up on Wall Street" Питера Линча для новичков в инвестировании. Важно уметь отличать реальные возможности от мифов.