Cool article but this first bit threw me off > The interpunct is still in use today—it’s the official decimal point in British currency (£9·99) When the linked wiki specifically points out that it isn't: > In British typography, the space dot was once used as the formal decimal point.
Fun fact, Windows 8 changed the decimal separator for the South African locale from a period to a comma. My theory is that some academic or idiot government official told Microsoft they're not using the official separator who duly fixed it. But in practice every "normal" person in the country used a period as a separator. By default, Excel now uses a comma separator for decimals. Which unless I change it, makes it es…
People then had a lot of fun being unable to extract their .postcode archive files which suddenly came into existence...