Debunking Economics III: Assumptions

I wanted to present as a list all of the assumptions which I have noted in economics. I'll update as I go.

• a rational individual maximises their pleasure to achieve happiness
• maximisation of pleasure is assumed to be achieved through consumption of goods. 
•  a util is assumed to be in a constant ratio to units of consumption. 
•  the util ratio is assumed to apply to all goods. 
• It is assumed that we would always want more of a good, but that the amount satisfaction we get from each new unit of consumption produces less utility.
• all consumers spend all their income.
• price changes do not affect income.