"...support our Volvo habits by ramdomly pushing buttons..."

Nothing wrong with that as long as you truly learn each outcome and improve from it. It's sort of a "Darwinian" method.

I remember my long-gone mother telling of the time I, as a four-year-old, stole a train. The railroad repairmen had motored down to a siding and left their electric-powered thingamajig sitting there. I jumped on and pushed the lever, and rode a mile down the tracks. The cops brought me home.

I can never resist testing a switch or lever or dial, "Gee, let's see what this does." I'm particularly attracted to the switches that say, "Don't!" and cannot avoid those that say, "Don't, you moron!"

Remember this: The people who don't make mistakes are the people who don't do anything. (I don't think its compliment is necessarily true, however. That is, I don't think that a long list a failures necessarily indicates an even longer list of accomplishments.)