Going from "nobody has complained" to "the customers are happy" does not seem too much of a stretch, particularly for an expensive unit. Granted, it doesn't lo

Going from "nobody has complained" to "the customers are happy" does not seem too much of a stretch, particularly for an expensive unit. Granted, it doesn't logically follow, but I would class this as a reasonable deduction from evidence rather than a fallacy. Note also that it's self-correcting - once one person complains, the company can't use that defense any more.