i have never said it would continue exponentially.. that would be a bit crazy.. but certainly linear.. i myself am doing an internship in nanoscale technology and i will tell you now that there is lots more research and technology that will come from that engine.. think of tv screens that are only as thick as the glass they are put on.. and this is how it is today.. they already have that.. and of course its fine tuning now.. because almost everything has been done.. space travel.. done.. but perfected.. of course not!.. but technological advancement will continiue as long as there is something left in this universe that isnt understood yet.