Volts/Watts...what?

[Alan]

Give the Vamo to someone with instructions on how to work it, and blindfold yourself. Get them to hand you the device randomly set at 8 watts or 4.1 volts (or whatever equation works out the same result) and see if you get the answers right.

 

[Mawsley]

Give the Vamo to someone with instructions on how to work it, and blindfold yourself. Get them to hand you the device randomly set at 8 watts or 4.1 volts (or whatever equation works out the same result) and see if you get the answers right.

I prefer games involving bowls of keys tbh.

Or lay-bys.