John Davidson, one of the richest people in the world, was walking down the street in New York City, where he saw a man in tattered clothes on a bench. He said to the man, "If you come around the corner with me to the clothing store, I'll buy you a nice suit." Having nothing else to do at the time, the man complied. However, when they got to the clothing store, Mr. Davidson changed his mind. The man sued, alleging a unilateral contract had been formed: Mr. Davidson had asked for an act, and the man had performed it. Discuss whether this was a unilateral contract or a gift.