Truth.

How to check if something is true. First and best known way is to try it. If you think you should try it, then this means
that you've been impressed much or less. There's always that first impression that sometimes suits you, and sometimes it doesn't.
If you're not sure after trying it, then just be patient. When a little time passes check that thing again. It's very possible that
you see most of it's minuses and thus define it's real pluses. This works because the point of view is changed, you understand it in
a different way and you must have gotten just a bit smarter than before.