What needs to be reinvented?

[Sunrunners_Fire]

Originally Posted by Gonzo

Do the Technological Skill (the ones that require defined TL) cover knowledge of previous TLs?

See GURPS Basic, pg 168.

Originally Posted by Gonzo

How would you rule out the attempt to craft (or invent first) something sophisticated that was quite popular in pre-disaster era and its working principles were known but no one has any schematics of internal construction (only the general idea). The parts for this device or some similar spare parts will be scavenged. So the task is to take this bunch of parts, use the things you need and construct a device that will work the same way as before.

See GURPS Basic, pg 473 - pg 474.