Experiencing physics by physically

There are lots of opportunities for re-recognition in everyday life what we have learnt at school and it suddenly came to me four days ago.

I was working in the backyard planting vegetable seedlings. I needed more soil to fill the garden bed in, so I went to where I keep my gardening tools. I looked for a big shovel and found one, then went one step forward to grasp it. That was a big mistake. I stepped on the edge of a rake which was leaning against the house wall and the long handle hit my forehead just above my left eye. It happened very quickly, and I couldn't avoid it. Luckily, it didn't hit my left eye.

If this were a scene in a comic, stars would have flown around my head. It was like a scene of an old comedy movie. I think I have seen a scene like this in an old silent movie, maybe it was a Charles Chaplin movie or a Buster Keaton's. It was hurt, but it was a bit funny.
While I was standing in utter amazement, three words came up in my mind: fulcrum, point of effort, working point.

Now, I realised the power of lever. What a teacher said to us pupils was correct, it can make a huge power using lever. I wonder who was the first person who found the mechanism of lever? Was he/she hit on his/her forehead by something and noticed it? Maybe it was not.

Experience is a better teacher than textbooks, but I don't want to experience physics physically anymore.