[Kbelicius]

> Then we must define what the dimensions of a seat are to know what we're tealking about.

Why? We are buying a seat, not inches. But since you insist, here: https://seatguru.com/charts/generalcharts.php

How does this information move the conversation forward?

[emmp]

A seat consists of inches. And these vary on every airline. So yes you do need to know the inches to know how many seats to buy under your plan. In principle even an average sized person could be undersized on some theoretical airline with smaller seats -- the dimensions are key.

[Kbelicius]

> A seat consists of inches.

Yes, but you aren't buying inches but a seat on a plane so it is irrelevant. The original poster said that when he buys a seat he bought a whole seat, not 0.7 nor 0.9 of that seat. How does defining that seat in inches invalidates his point?

> So yes you do need to know the inches to know how many seats to buy under your plan. In principle even an average sized person could be undersized on some theoretical airline with smaller seats -- the dimensions are key.

Yes, when you want to fly it is good to know what size a seat you are buying but notice that you saying that in no way moves the conversation forward. And nobody claimed that knowing the size of seat in inches isn't important.