Cable/Fuse Direction Matters?

I've been following several threads and there are several references to this "Phenomenon".

I've just finished some interconnect upgrades and got me wondering whether it happens in cables regardless of connector type

E.g. does it occur more frequently in cables with RCA connectors or equally spread across cables with DIN or XLR?

A similar effect also appears to be true for fuses

So here's my question - is there some dark force out there that seems to alter the laws of physics as we understand them?

OR - is it simply a case that both fuses and interconnects are actually seating better when connected one way as opposed to the other way?

if someone has a logical explanation for this please post it

Thanks