A child raised by wolves will not be able to express self-awareness through sign language, or grunting, or interpretative dance, or any other way.

If you believe this because someone told you it then you are retarded.

We've studied feral children before.

Oh yea? Who did? When? Where's the paper? I mean there's just tons of feral children around, so I assume there's a deep collection of good verified science here.

They lack the ability completely.

If I record "I'm a conscious tape recorder" on a tape, and then set a tape recorder to play it back on repeat, is it conscious?

Use some actual fucking reason.