In the course of our daily insanity yesterday, I had a few students charging vehicle batteries. One asked where I wanted them set up, and I told him "Right there in front of the car will be fine. No point in carrying a heavy battery farther than we need to".
He responded "On the concrete floor? You can't charge batteries on a concrete floor!".
I replied "You can if I tell you too. Your assignment now is to research that notion and come back to me with a reason not to charge batteries on a concrete floor".
To which he said "Ohhh Man... everything is HARD around here".
My final remark: "My job is to make your brain sweat, and I am good at it".
It seems word of this spread through the class. Another young man asked me about it later, and seemed convinced that one cannot charge batteries while they are resting on concrete. I asked him why not, and he had no answer. I asked where he had heard this idea from, and he said "Lot's of people".
I (somewhat) patiently explained that there is no logical reason why a vehicle battery cannot be charged while it's resting a concrete floor any more than a wood floor, or a sheet of steel for that matter. I went on to explain that all those people who had told him that were wrong, and had lied to him. Maybe they lied because they were just too lazy to think about what they were saying, but still they lied.
I told him people have lied to him all his life.... usually for the same reason.... they were too lazy or too pigheaded to think about the words coming out of their mouths, and it was never, ever going to stop. I told him it was HIS job to filter out the BS attacking his ears, and do the thinking for himself.
I told him not to trust even what *I* say to him..... think about everything he sees, hears, or reads.
Now it's up to him.