TO PAY for his professional flight degree at Purdue University in Indiana, Andrew Hoyler had two choices. He could rely on loans and scholarships. Or he could cover some of the cost with an “income-share agreement” (ISA), a contract with Purdue to pay it a percentage of his earnings for a fixed period after graduation. […]

IT IS a classic traveller’s dilemma: you are waiting in the boarding area for your flight, and an airline employee asks over the loudspeaker if anyone is willing to be bumped in exchange for a voucher. You like the idea of sacrificing the unimportant meeting you were scheduled to attend in return for a few […]