If I had to make a 100 year bet on what would be the human computer interface of the future, after getting it contractually agreed that whoever is forcing me to place this bet is responsible for me surviving another 100 years, I would probably then bet on Tetris, just to annoy everyone.
That said, I don't think it will be fmri either. Personally, I'd be betting on something involving an implanted optical lace driving genetically modified cell sites, with possibly a shielded skull to actually block rf shenanigans, as a futuristic nod to all the tinfoil hat wearers.
I can't imagine the ultimate HMI being anything but synaptic, specifically a bio-engineered cell which has a human synapse on one end and an electromagnetic interface on the other.
That said, I don't think it will be fmri either. Personally, I'd be betting on something involving an implanted optical lace driving genetically modified cell sites, with possibly a shielded skull to actually block rf shenanigans, as a futuristic nod to all the tinfoil hat wearers.