At what approximate date will all known reserves of petroleum be exhausted, providing that the global rate of consumption and increase in consumption remains steady, and provided that all available resources can be extracted, even if we do not currently have the technology to do so yet?
The fact that we do not know what the future will look like, means we should make our best efforts to understand certain likely scenarios, and adjust our own behavior and actions accordingly in order to be a part of designing a future that is attainable and practicable given the current conditions/inertia at all socio-economical levels.
What's really interesting, is the boundary they are crossing given this "tech-artistry", which clearly HN is pretty far removed from. It's quite interesting for someone who's seen plenty of this before to observe the polarized response from a different slice of society.