So are the physicists a bunch of bumbling incompetents who cannot do their sums?
From the economist.com
Goodman is vast, a tyrant much more bumbling and sensitive than you usually see.
From the post-gazette.com
Bumbling fathers dealing with a teenage daughter who stayed out past her curfew.
From the charlotteobserver.com
But if his bumbling-failure act helmed such classics, why mess with the formula?
From the time.com
It has been a good season for the 49ers after, as you say, a decade of bumbling.
From the guardian.co.uk
I think you should change that to the bumbling detective named Jacques Clouseau.
From the forbes.com
There is the bumbling protagonist bemused by a particular aspect of modern life.
From the en.wikipedia.org
Too much ink has already been spilled on the bumbling New York Jets this season.
From the keepingscore.blogs.time.com
Was all his fumbling and bumbling the real Rod, and not just some sympathy act?
From the stltoday.com
More examples
Lacking physical movement skills, especially with the hands; "a bumbling mechanic"; "a bungling performance"; "ham-handed governmental interference"; "could scarcely empty a scuttle of ashes, so handless was the poor creature"- Mary H. Vorse
An act of bumbling, a mistake or error especially through clumsiness
Making careless mistakes in a confused way
Botch: make a mess of, destroy or ruin; "I botched the dinner and we had to eat out"; "the pianist screwed up the difficult passage in the second movement"
Stumble: walk unsteadily; "The drunk man stumbled about"
Speak haltingly; "The speaker faltered when he saw his opponent enter the room"
A confusion, jumble; To act in an inept, clumsy or inexpert manner; to make mistakes