It depends on who you talk to. Tunnels are either the greatest thing or the dumbest idea ever.

That is the dumbest thing I've ever heard,

When I first got pitched on Uber, I thought it was the dumbest idea ever.

He who depends on himself will attain the greatest happiness.

It's the dumbest thing I ever heard of.

If some guy said this to me, I wouldn't listen either, but one-rep max-outs are the dumbest things you can do to yourself.