Watching Warren learning to buy tech stocks is like watching a 4 year old learning to ride a bike. I suspect the problem is that for tech stocks the future is

Watching Warren learning to buy tech stocks is like watching a 4 year old learning to ride a bike. I suspect the problem is that for tech stocks the future is much less certain than in most industries and the trick is to judge before hand how things are likely to play out for a given stock given the various threads of likely technical progress over 2, 5 and 10 years.