> If you have the pre-requisite knowledge Isn't this a pretty big barrier though? In the times the article discussed, plenty of parents bought chemistry kits

> If you have the pre-requisite knowledge Isn't this a pretty big barrier though? In the times the article discussed, plenty of parents bought chemistry kits for science-inclined kids without any real idea of what they were; assured by the packaging and availability that they were appropriate. For the most part they were correct. That's hard to imagine these days.