We hear idiotic remarks all the time from experts like :

We are having 100 year rainfalls every year now

It is difficult to grasp the level of stupidity behind that remark. The odds of winning the lottery are 100 million to one. For any individual, it is a multi-million year event – yet it happens all the time.

Same story with rainfall. If you have 5,000 weather stations which have been keeping records for 100 years, odds are you will have fifty “100 year rainfalls” every year.