Very well done. It actually always baffles me that so much of biology takes place on scales that are very close to human perception. When looking at microscope

Very well done. It actually always baffles me that so much of biology takes place on scales that are very close to human perception. When looking at microscope images, the sizes of things become very abstract. Atoms and cells might as well be of the same size. But a 0.1 mm object is perceptible to the naked eye. This resolution is just an order of magnitude too crude to see individual cells (the human egg cell is just barely visible to the naked eye), and two orders of magnitude cruder than the resolution limit of optical microscopes. Imagine how differently science might have progressed if we had known about cells before inventing the microscope!