[davidivadavid]

It's a balance. If you only read what you think you should read, you're exposed to "you don't know what you don't know"-effect. If all you do is read stuff (an albeit fun activity), you risk not doing much with the knowledge you acquired.

If you feel like 80% of what you read is a waste of time, just, erm, don't do it.

[mewpmewp2]

In a lot of cases you can get what you don't know by doing a consultation with an expert/specialist. The older I've got the more I value such consultations, maybe because I also have more money to dish out.

So if you have a project, then first consult with different people, I would also consider that "just in time".