Yes, yes, I know that apostrophes have been used in varied ways over the centuries, but sometimes they do make a big difference.
Sir Robin Mountfield has died. He was a very senior civil servant, and also a grammatical stickler, who came up with my favourite example of how, occasionally, apostrophes really matter.
This example was a World War 2 headline, and it described a German army advance which had succeeded in surrounding part of the French army.
GERMANS' PUSH BOTTLES UP FRENCH REAR.
As Sir Robin pointed out so persuasively, without the apostrophe it could have had a rather different meaning.
Thing To Use Today: apostrophe. This word has come to us through Latin from the Greek word apostrephein, which, oddly, means to turn away.