[visarga]

> Does consciousness produce any measurable effect?

In the morning when you wake up do you make a sandwich? If you didn't have consciousness, you wouldn't. So your body would cease to exist in a short time. Consciousness has measurable effects - every time it saves us from hunger, danger, and other bad situations, or when it leads us to good situations.

[vokep]

But theoretically you could just as well be a philosophical zombie, getting up and making a sandwhich. Electrical lights on in the brain but no light of consciousness.

[MaxBarraclough]

You're describing intelligent decision-making and prudent action, not consciousness.

We are conscious even when doing nothing, and computers show us that systems showing some sort of 'intelligence' needn't be conscious.

(I'm being very imprecise about the meaning of 'intelligence' here, mind.)

[vanviegen]

Following that logic, a robot vacuum that can have itself charged is conscious?

[visarga]

It's at least conscious of its energy.