Joseph got into some trouble with the police when he was a teenager. He dropped out of college and did not have steady job at age 22. His grandfather was very concerned, so he promised to Jospeh that if he got a steady job, did not break the law again, and would go back to college if he could be admitted, the grandfather would pay Jospeh $20 000. Discuss wether these various promises on Jospeh's part would constitute valid consideration for the payment of the $20 000.