Free plans? Open source plans?

As I said elsewhere, computers and software are tools for the Pilot
and should be used accordingly. *Either by themselves may have flaws
that in combination could be eliminated.-

Fair to say.

The space shuttle can't be landed without software. There are modern
bombers/fighters that are apparently too difficult to control without
software making minor corrections to flight inputs (I've read. I
haven't flow, so I don't know but from heresay and magazine articles).

My prejudice is working 10 years in software and seeing for myself how
small flaws can be missed by even extraordinary testing regimes and
not detected by even the best of developers.

For experimental aircraft and small GA aircraft in particular I prefer
cables and pulleys and turnbuckles to software activated electric
motors.

I wouldn't have thought that an offhand crude comment about open
source software could have so thoroughly hijacked this thread.