[gmig]

"Only 50 such scans have ever been done."

"The aim the $40m programme is to map the entire human neural wiring system by scanning the brains of 1,200 Americans."

[protothomas]

Look at what happened with DNA sequencing[1]. Linear extrapolation isn't always the best predictor of progress.

[1] http://www.dnasequencing.org/history-of-dna