The only thing that scares me in the tech area is that it moves so fast that you have to be ready to invest in 20 things. Because if you just invest in one, next week, somebody has a better mousetrap, and you get taken to the cleaners.
I used to always be putting my hat on children being photographed and then getting home and discovering I was riddled with lice. That used to happen very, very regularly. I used to get headlice all the time.