1. lisp 2. realising that its more about delivering than dreaming up the perfect abstraction (get it done). 3. what you think the user wants vs what the user

1. lisp 2. realising that its more about delivering than dreaming up the perfect abstraction (get it done). 3. what you think the user wants vs what the user thinks they want vs what the user actually wants vs what the user actually needs. 4. that there are always tradeoffs 5. building a product by yourself (whether on the side or starting up) will give you invaluable experience.