Despite Faire d'Income's assertion that it is self-evident, I think it remains to be proven whether seniority brings many benefits to airline pilots, especially in respect of promotion. Overall I think it is a recipe for dissatisfaction, as those who are unhappy with their employer feel unable to leave. However I think that for compulsory redundancy there is a case for rewarding loyalty (ie length of service), and possibly for other relatively trivial reasons, eg leave, trip allocation etc. Sorry to use so much "bandwidth" as he trendily calls it, but those near the bottom of the pile deserve an explanation of the ways in which the demigods near the top are better operators. Go on: convince me!