

Yes, the upstart-queen is from within the bee’s own hive. The hive permits only 1 queen and others are destroyed. The selfishness is not on the part of the worker who kills it, it’s on the upstart-queen who is trying to replace the main queen.
In the case of body cells and apoptosis, I’d view the actual human being as equivalent to the entirety of the hive/the queen bee, in which case, the process of apoptosis is selfless from the point of view of the cells killing themselves or other cells - in theory it’s for the good of the human being as a whole.
Yes, apoptosis is selfless. Cancer is the selfishness it fights against: a group of cells in selfish rebellion against the body.
Perfect hexagons are not to spec. Notice how each hexagon is different yet they all fit together. That gives it an organic look. Makes it far more difficult to machine since now you can’t just machine a single piece of round stock into a long hexagon and then cut them off into pieces with the right thickness.
If they were perfect hexagons it would be easy. Just need a big enough piece of stock.