Re: Get a life...
Rubbish. The pole is a quarter of a chain, which is perfectly logical.
As for the perfect acre being 4 poles by 40 poles, it is much easier to remember as a chain by a furlong. Since a furlong is 10 chains, an acre is thus 10 square chains. What is a chain? 100 links, of course.
As for money, the old system had many advantages - restaurant bills could be easily divided between parties of 3, 6, 8, 12 or whatever. Plus it gave innumerable opportunities to cheat foreigners.
I still miss the old red exercise books with all the measures on the back:
rod, pole, perch, bushel, peck, Troy ounce, furlong, and so on.
Metric units are so ... pedestrian ... by comparison. Just because we have 10 fingers doesn't make 10 a good base for a number system.