* Fusion research -> We should build big experiments (eg. ITER) -> First principles: if it takes years to start the experiment, you'll lose momentum. * Construction industry -> We should reduce the number of lanes so we can work -> First principles: using prefab roadblocks could speed up the work (cfr. comment of Elon Musk in an interview) * Agriculture -> We should produce more -> First principles: the approach should be adjusted to the weather forecasts