Trial & error is one of my favorite learning processes. Making mistakes usually leads to permanent and indelible epiphanies and knowledge, not to mention often leaving us with great stories.
However, this learning strategy does not work in every aspect of life. Some things are simply not worth the risk. And extreme trial & error is usually very inappropriate when making grand decisions on behalf of other people (government, for example).
I personally do not trial & error the commandments. Nor do I make casual mistakes or risky transactions with (large amounts of) money. Sometimes, you just have to rely on the experts and play it safe.
1) What things do YOU learn (or have learned) through trial & error?
2) What types of things do you learn through other sources of wisdom?
Oh the terror
of Trial & Error!
PS. You probably already know this, but the word fear as it is used in the scriptural graphic above denotes respecting or obeying, not being scared. We are to follow God, but not be afraid of Him.