We've always engaged in modern science, ever since science has been around.
Some Imperial measures may be old - as are Metric measures, which date back to the 18th Century - but they aren't archaic. They are still used by millions of people in everyday life, because they are based on real, everyday, ordinary life, such as a foot being derived from the length of an adult male foot. Compare that to the metre, which is the length of the path travelled by light in a vacuum in 1/299 792 458 seconds.
How is saying 12 eggs in any way better than saying a dozen eggs?
What's bizarre about a furlong? It's 660ft - an eighth of a mile.
What's your problem with using the furlong for scientific measures? You could just as easily use the furlong to measure the distance from Earth to Alpha Centauri (205.36 trillion furlongs), just as we easily use the Imperial mile to do it.
The furlong dates back to Anglo-Saxon times and means "long furrow" in Old English, referring to the length of the furrow in one acre of a ploughed open field. Why should the English ditch a measurement created by their Anglo-Saxon ancestors to adopt an alien, foreign system? The Canadians might not treasure their traditional measures but the English sure do.
Why? Most people in the world don't speak Finnish, so maybe the Finns should stop speaking it, using your logic.
I think it's debatable that most people in the world use Metric measures. Most people, I reckon, use their traditional, ancient systems, no matter how much their governments try to force alien, cold Metric measures down their throats. Most Chinese don't use the kilometre to measure distance - why should they? It's French. They use the traditional Chinese li. It's illegal to have roadsigns in Metric in Britain. By law they have to be in Imperial measures.