system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: We can freeze human sperm and eggs indefinitely, without "killing" them. Why can't we do the same for whole people, or even just organs?
gpt
Because sperm and eggs are just single cells. Organs and organisms are collections of cells that must operate in unison or the entire organism dies.

If you have 5 million sperm cells and your freezing/thawing process kills half of them, you still have 2.5 million viable sperm cells to rely on, and only need one for success.

If you freeze/thaw a person and kill half their cells, you end up with a mess.