what are your thoughts on Bidirectional brain-computer interfaces ?

It can't exist meaningfully in a world of patents, trade secrets, vendor lock-ins and closed source.

I'm not installing something that I can't inspect, modify or service anywhere I please.

It would be so cool to use one that I'd written every bit of code to myself!

A deep brain simulator took moderate Parkinsons and all but eliminated the symptoms, adding a decade of working years to the end of my father's life. If don't ethically I am wholly in favor.

Oh yes, please sign me all the way up for corporations pumping ads directly into my brain, that's a great plan. :P