I disagree, I think it would be much easier if the old measurements died the long overdue death they deserve. I've learnt them only because of legacy and foreign datasets - like the survey maps I mentioned. I do woodwork for a hobby and even the US-centric forums are predominately metric or moving that way. Aerospace has long been entirely metric - the Mars Climate Orbiter was a good example of why.A lot of things would be a lot easier for people if they were taught more of the Imperial System... For one, the Metric System. It is easier to slot Metric measurements in once you know more of the Imperial ones. One thing I hate, is that they decided that it was best to mostly use feet and miles. As things go, remembering smaller numbers tends to be easier.
It's a legacy system and deserves to be left as the interesting historical footnote it is.
And is now defined as the length of the path travelled by light in a vacuum in 1/299792458 second.Just a reminder... The Metre was originally defined as one one-millionth of the distance from the Equator to the North Pole. All forms of measurement are arbitrary and based off of convention.
Edit: Sorry, it was one ten-millionth.