Don’t take this number (20 years) to much seriously. It’ has more economical factors than a technological. T. Kotil said this very applicable in an interview. And gave a war time as an example, where products like this much faster developed and matured in a war time. Same goes for mass...
Dear Lord!..
Are you trying us to savory a swift death?
Ironic on.
You Western people are pure evil. I wish you all to be erased from this Planet. Of course, in a smooth way without pain and suffer ;)