Is the science settled?

When people say "the science is settled" I get suspicious-

That might be a fair thing to say about a simple issue,

But not the complex ones, to which it is often applied.

After all, the science is never settled,

Not on anything complex anyway,
And that's what makes it science,
And not religion!

To me: " the science is settled"
Seems more like a political position-
Than a scientific one.

And too often it is designed to shut down alternate opinions

Rather that just concentrate efforts where they are needed!