Laugh then think.

Ideas are used in solving problems. Sometimes they are very hard to get while other times there are too many and some of them look ridiculous right from the beginning. How can you know what ideas are good? This is a tough unsolvable problem in itself since I guess there is no clear solution to it.

Marc Abrahams will try to solve it tomorrow during his PI lecture What's the Big Idea? It looks like the lucky holders of a lecture ticket are for a real entertaining treat.