John Doe agreed to build a machine for Sam in ten days for $1,000.Samthenwanted to modifytermsof the contractrequiring it be done in 5 days instead. and Johnagreedorally to the change without getting anything for his agreement . Can the change be enforcedeven though no consideration was paid for the change?___________. Why______________________________________

The same facts as before except John agrees to the modification in a letter. Can the change be enforcedeven though no consideration was paid for the change?_____. Why?