Burt made two pledges of $50,000 each to the Mt. Sinai Hospital of Greater Miami. He made the pledges “in consideration of and to induce the subscriptions of others.” Nothing was said as to how the funds were to be used. Mt. Sinai Hospital did not use his pledge to induce others to subscribe. Nor did the hospital undertake any work in reliance on Burt’s pledge. Burt died in the following year. Up to the time of his death, he had paid $20,000 on his pledge. The executors of his estate now refuse to pay the balance. Must they do so? (Mount Sinai Hospital of Greater Miami, Inc., v. Jordan, 290 So. 2d 484, Fla.)