A year ago I had the opportunity to give a 30 minute presentation on something of my choice to my housemates (a couple dozen people). I decided to do a brief explanation of Marx's view of capitalism. Mostly I just ran through Capital but I also talked about how Marx's observations are all still true, his predictions have been proved right, and his theories are still relevant today. Also a bit on how trying to solve the problem of automation without Marxism is a fools errand. It was pretty dense and boring, but today someone who was there told me that my mini-lecture convinced her to read a bunch of theory and she's a Marxist now. So it had an effect on one person at least.