1. What is the state of the market?
2. What is the volatility of the market?
3. What is the equity being traded?
4. What is the system or the trading orientation?
5. What is the risk aversion of the trader or client?
Regardless of how you trade or invest … you better have those answers in advance of betting real money. Thank William Eckhardt for those perspective pearls. And yes–you answer with a number.