rnelsonee offered the best explanation of the imperial measurement system I have ever read:

Imperial is similar to metric if you constrain yourself to one type of measurement. Like liquid volume uses power of 2 instead of 10:

1 dram x 22 = 1 Tbsp

1 Tbsp x 2 = 1 fl oz

1 fl oz x 2 = 1 jig

1 jig x 2 = 1 gill

1 gill x 2 = 1 cup

1 cup x 2 = 1 pint

1 pint x 2 = 1 quart

1 quart x 22 = 1 gallon

But then Imperial gets all weird because entire different scales get mixed together. For example, a mile isn’t a terrible unit – it’s just a thousand paces (hence miles), and is more intuitive/easier to measure (when walking) than km. I like the foot and inch (thumb size) as well, even though people obviously have different sized feet (but hey, it’s not like the meter is easy to recreate with no tools). But no one has any business mixing inches and miles (at least they didn’t 1,000 years ago) because you’d measure troop movements in miles and your dick in inches. It wasn’t until we started doing a lot of ‘extreme’ levels/measurements with physics that we needed metric to easily convert between the two scales.

Of course, this was after this:

And then this: