Based on this view, there are no valid scientific theories.
There have been no gravity waves observed to support General Relativity. Anomalies in spacecraft trajectories are still unpredicted and unexplained.
No folded up dimensions or new families of particles have been found to support string theory or m-brane theory.
Is there anything in quantum mechanics that can actually be explained? And only the simplest calculations can actually be performed.
No plate tectonic or geological theory explains the exact motions of the magma plumes coming up from the planet's core.
Chemists can't predict the result of any combination of chemicals that haven't already been combined.
Coronal heating in the sun is still unexplained.
High temperature superconducting ceramics continue to evade the latest theories.
I still have examples left, but I have to get to my meeting.
Luckily scientists don't fall for these rhetorical tricks.