A fantastic and magical device from the past.

[AL_DA_GREAT]

Good joke

 

[El_Machinae]

Although, I wonder: Do we perform better or worse with devices like this?

Dunno. Depending on your level of subconscious skill. Kinda like: are you better at standing on one foot if you're conscious of it, or if you're not thinking about it?

 

[ironduck]

Being conscious of the action is almost always a hindrance once the technique has been learnt. That's why you need to find the zone to perform optimally.

 

[puglover]

The first step to mind-controlling super-genius-dominated world empires. I saw this on Twilight Zone once.