Yes, and the assumption is that a horse is worth between $0 and some number so there is never a reason to refuse a gift horse. In the case of other "gifts" the

Yes, and the assumption is that a horse is worth between $0 and some number so there is never a reason to refuse a gift horse. In the case of other "gifts" the value can be negative. The trojan horse, software, and blankets from Lord Jeffery Amherst all need careful examination.