This was a useful video on an interesting concept. Needless to say, thanks for your videos. They are very helpful Just my 2c - When the irregular prospect example began around 07:45 , I was confused when X was described as a sure $100 gain. I was then able to understand it better when you clarified it at 08:00, stating Coin flip: Heads - $100 Tails - $150 And this means that, in either case, you are getting $100 for sure. tl;dr - It seems to me that it would be best to introduce an irregular prospect as one with two uncertain outcomes (rather than its 'segregated' version)

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