NambawanRoofsLtd,acompanywhichrenovatesroofsforhousesemploysBouleastheir salesman. Boule visits the home of Steven to promote Nambawan Roofs Ltd's roof renovations.

Steven was a 75 year man suffering from Alzheimer's disease. He could not remember things, read documents or comprehend business transactions.After 20 minutes of discussion,

Boule realised that Steven could not remember what they discussed 5 minutes previously, could not read the roof renovation contract and had trouble understanding that Boule was trying to sell him a roof renovation. So Boule filled in the roof renovation contract on behalf of Steven and did not recommend that Steven get independent advice about the contract as he wished to make the sale so that he would win Nambawan Roofs Ltd.'s award for "Salesperson of the Month".

Advise the parties whether or not the contract is valid>