Metric system or Base-12 ?
The metric system (base-10) is easier to remember than older systems. Every unit is uniformly 10 times more than the next smaller one. Or 10, 100, 1000 times, if we consider only important ones. Also, by using prefixes like "kilo-" there are less words to remember. We use it in "kilogram", "kilometer". For length, we just remember "meter" and apply the prefixes. We don't have to remember: "inch", "foot", "yard", "furlong", etc. However, the older systems came about for a reason and do not pooh-pooh our ancestors for using Base-12 systems. They makes it easy to get "a quarter", "a third", or "half". If things were sold by "the tens", the green grocer could give you "a half", but couldn't give you "a third" or "a quarter" without cutting up some fruit and vegetables (or eggs). I was reminded of this recently, while watching a tu