Single-handedly is when Louis Slotin improved nuclear research safety for all time with the consequence of his failed screwdriver stunt. What Tesla and SpaceX

Single-handedly is when Louis Slotin improved nuclear research safety for all time with the consequence of his failed screwdriver stunt. What Tesla and SpaceX have done are enormous human undertakings. He did not single-handedly do it by any rational interpretation. The delusional self-confidence he used to get investors to pay for those undertakings is what's about to destroy Twitter.