Cells are incredibly tiny, much smaller than the smallest thing you can see with your naked eye. Here's why:

* Size: Most cells are microscopic, meaning they're too small to be seen without magnification.

* Resolution: The human eye has a limited resolution, meaning it can only distinguish objects down to a certain size. Cells are much smaller than that limit.

Microscopes provide the necessary magnification to make these tiny structures visible.

Let me know if you have any other questions about cells!