Trillions of Plankton That Refused to Evolve

1) The gap between statistical expectation and reality

Astronomical numbers of divisions, zero change in form
If trillions of plankton divided every day for 100 million years, statistically "macroevolution" should have happened tens of thousands of times. Yet they remain in the same genus, a miserable result that defies probabilistic expectation. I'm not asking them to become shrimp, squid or octopus. Something bigger, or a completely different form, should appear about once a day.

2) Stromatolites and the contradiction of "stasis"

Blue-green algae unchanged in form for 3.5 billion years
Does evolution take breaks? The structures inside stromatolite fossils, estimated at 3.5 billion years old, match today's cyanobacteria almost perfectly. The more individuals there are, the exponentially higher the chance of a beneficial mutation. If the answer is suddenly "stasis," is that science?

3) DNA repair mechanisms that hold evolution back

A cellular system that resists genetic change and protects identity
Is it repair mechanisms, not probability, that block evolution? One counterargument says that the principle of discarding harmful mutations prevents evolution. But if that's true, it amounts to evolutionary theory admitting that life resists evolution on its own.

Conclusion: macroevolution at the microbial level, and fixed forms

What the limits of plankton say about leaps to higher life
If plankton can't evolve, how is anything going to become a dinosaur? And if the direction of change were truly random, we should at least see a lot of bizarre explosions of form. Instead, reality shows stable forms repeating. The engine is running at full throttle, and the car hasn't moved.