I think you're right. I didn't mean to make the implication that the problem was electrical vs paper. I eventually did get old enough to go to the hardware store to buy bell wire, knife switches and bulbs for my early experiments. I wish my kids had grow up more interested in building things. I feel like I failed in this.
With respect to using paper and pencil for math there is still no contest between doing math on paper and doing it with your finger on an iPad.
With respect to using paper and pencil for math there is still no contest between doing math on paper and doing it with your finger on an iPad.