Instead of the above letter, assume that at Pablo’s retirement dinner, the chairman of the board of directors of Xerxes Corp., in his speech, said "In view of the fact that you have been faithful to Xerxes Corp. for 30 years and have resisted efforts of our competitors to hire you away from us, the corporation promises to pay you a pension of $100,000 a year for life." Pablo stood up and said, "I accept your pension promise with gratitude." Is Xerxes Corp.’s promise enforceable by Pablo and if not, what would be necessary to make it enforceable?