[__MatrixMan__]

But how much of the code that used to support your 14.4k modem is still used to support your fiber connection today?

It seems likely that the dominant currency of the future will be heavily inspired by Bitcoin--but will it be the same blockchain Bitcoin uses today?

Seems unlikely to me.

[icedchai]

We'll assume he was using PPP or SLIP when he had a 14.4k modem. TCP/IP has been around for 30+ years. So, yes, a lot of that code is still "supporting" his fiber connection.