Whether or not people's virtual cash valuation is going to continue to be represented by numbers on bits of paper and metal as opposed to numbers on computer databases seems like a yet more subtle idea to fail to fully grasp at the moment.
And in any case a map is a piece of safety equipment - you spec if for the worst case scenario.
But nowdays you get them coated in a plastic layer ... very nice, water proof and durable.
edit: or like the othe commenter mentioned, it is not a plastic layer and rather plastic itself called Tyvek or similar
NB When in Scottish mountains I take:
- An iPhone with offline OS maps
- An external battery for my iPhone and cable
- A paper OS map in a waterproof map case
- A printed A4 backup of an OS map in a plastic bag that I can give to others or to use if other maps become unusable (e.g. blown away - which has happened)
80% of the time I just use the iPhone - still have to use OS map and compass occasionally when things are particularly exciting.
And with each series of UK banknote in circulation for ~14 years, planning to put someone on a note in 4 series time is pretty forward-looking :)