Voyager UI/Design Decision ?

I’ve always been intrigued by how design decisions are made be it in software (which I work) or hardware…

Looking at the 4 red oscillator switches you will notice that the first three are all ON/OFF in nature. The first two (1-2 SYNC and 3-1 FM) have ON on the top and the third (3 KB CONT) has ON on the bottom. The fourth switch is 3 FREQ with LO on top and HI on the bottom.

My questions is…why is 3 KB CONT reverse of 1-2 SYNC and 3-1 FM? Is it because the most logical default setting for that switch is ON which make all the logical defaults for those switches to be in the DOWN position?

Any thoughts? Comments?

The most used setting for normal sounds needs all switches to set to their ON psotion. By this design, all switches are in the same physical position then.
I think they were right to do them this way.

That’s what I figured.