Subway update their pricing such that a footlong sells for $5 and a six inch sub costs $7. Looking at those prices, you purchase a footlong sandwich. Should Subway be allowed to demand $2 from you if they see you discarding half of the sandwich?
It is even worse, a better sandwich analogy is you buy a huge sandwich. You will eat half now and half later (you return flight) but you don't like the crust. The shop sells a crust free sandwich, but they charge more. So you buy the crust one, remove the crust and eat half. The shop owner sees you throw the crust away, he charges you with fraud AND takes the other uneaten half back.
I feel like these analogy threads are HN users way of getting around the no-fun policy of commenting on HN.
Someone writes a comment using an analogy and almost always there are people de-constructing the analogy and then creating their own "improved" version that take more facts into account making it harder to understand the situation which is the exact opposite effect an analogy should have.
Subway update their pricing such that a footlong sells for $5 and a six inch sub costs $7. Looking at those prices, you purchase a footlong sandwich. Should Subway be allowed to demand $2 from you if they see you discarding half of the sandwich?