At one place I worked we built equipment which used a multi-position pushbutton switch (one of those things with a mechanical interlock,so if one button is depressed,it resets the other ones).
It had a network of diodes attached,& as there was no PCB,they were soldered in place on the switch terminals on
one end ,& connected together & to the incoming connections on the other.
Making a neat job was extremely difficult, as the diodes & floating connections had to be covered with heatshrink tubing.
To do a neat & electrically sound job took around 15 minutes on average--it took me longer.
On looking at the interface board these things connected to,I noticed a number of other switches connected to identical input circuits,all of which
didn't use the diodes.
It turned out that the diodes were from an early version which had never been used in production,& were not needed.
At that point, it should have been a simple matter of deleting the diodes,but things didn't work that way!
I had to prove that they were unnecessary! I did so,but nothing changed.
Eventually, after weeks of inaction from the people who were supposed to be in charge of such things,I hijacked The Engineer, showed him the circuit & switch,& after a bit of discussion,he agreed.
That was not the "Company way",so I became the bad guy!
This is not to bignote myself,as any competent tech would have noticed this,but they didn't much like competent techs!
VK6ZGO