The element phosphorus, on which life heavily depends for its codes and metabolic processes, is a limiting factor for complex beings on habitable planets.
There is more that most people – probably most scientists – have never even considered, and that seals the case for the heart’s intelligent design.
Michael Denton has shown that humans must be the right size to use fire and create technology. What about size limits on big animals?
Don’t walk on the grass, that “often undervalued” form of life, without looking down. It’s amazing down there.
Any of us can point to certain pivotal events in our past that need not have occurred, but did.