Programmers are frequently questioning what is the best way to do x or y, in many cases people will grab the first result from a web search (sounds familiar?), take that as the absolute truth, apply it to whatever problem they are solving and move on with life, though other times the ramifications of such learning experience will carry over much further, maybe the person will write a blog post about it or teach his/her co-workers, thus distributing the knowledge.
Keep in mind that is not always about finding out the best way of doing things, some other times we find out that something is not possible, and this last one might be worst, more so on young developers, learning that something is not possible is very dangerous, have you seen an elephant tied to the tiny stake? it has learned that as soon as it reaches the end of its rope, it can't go any further.
Many of these truths come from respected authorities in the world of software, maybe from the software vendor itself or the official community around it, making matters even more complicated because they are the source and you trust them. The key here is not that you can't trust anyone, it's only that you should not lock that into your brain as the absolute truth, software is always evolving, it's always changing truths.
There are few things that you should take as the absolute truth though ;), among them:
- There's usually no best way of doing things, there's only a better way(s) of doing it.
- Software development is not black or white, in fact I think most of it is gray area.
- There are no hard rules in software development, it'd be too easy if that was the case.
- There is no such thing as an impossible thing, only incapable beings.
- Software is always evolving, what is truth today may not be the truth tomorrow.