Board Thread:Questions and Answers/@comment-28067574-20190903053053/@comment-32182236-20190903112405

...This is no paradox.

The monster lifetime is simply longer than a human lifetime.

Gerson shows that monsters can live for millenia, and if this is evidence of Alphys being alive when Chara was (Though I'm not sure why the flowers blooming after Chara died isn't just common knolwedge that she could have gathered after the fact), this just further proves that monsters live longer than humans.

They're made mostly of magic, not physical matter. So they wouldn't naturally decay as quickly.

There's a very easy solution to be made:Monsters live longer than humans.

It's really that simple. Done.