Normally, spending more money on an airline gets you better perks.
In this case, it is the opposite. This is someone who takes advantage of low fares but takes the advantage of flexibility (which normally requires a higher fare).
I think of it as someone who plays blackjack with two spots (or a partner-in-crime, same thing). Play two hands, and switch cards to make a better hand. For example, one hand is dealt 6 and 10, and another hand is dealt 10 and 5. Switch the 10 and 5 and exchange the 15 and 16 for an 11 and 20. Stand on 20 and double down on 11. This is called cheating and it will not just result in being barred from the casino, it can also result in jail. Card counting is legal. Switching cards is not legal.
Last edited by Kevin AA; Sep 3, 2018 at 11:40 pm
Reason: typo