Earlier quoted context omitted.
> I don't see why progress will be a straight line and not a sloping-off curve. Technological progress often appears linear in the short term, but zooming out reveals an exponential curve, similar to compound interest. > You shouldn't see the progress we've made in vehicle speed and assume we can hit the speed of light. Consider the trajectory of maximum speeds over millennia, not just recent history. We've achieved…
> While reaching light speed is challenging, we're exploring novel concepts like light-propelled nano-vehicles Do you think hitting light speed is an engineering problem or a fundamental constraints problem?
(It would have infinite energy meaning infinite relativistic mass, and would form a black hole whose event horizon would spread into space at the speed of light).