Scientists, engineers or psychologists like to use a blind test to rule out bias or delusion but:

I need my eyes, I know to know, so I can see where to tune in to, know what to tune in to for that greatness.

Some radio stations have a very tiny window to which there is audible sound. Scientists claim blind tests rule biases out. They don't, they just cripple the test subject's ability to tune in to said thing or not.

I know it must be hard for nerds to realise there's more freedom to the technical World outside their gate kept knowledge than they care to realise.