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Chu employs her considerable expertise to argue that criticism can and should leave behind theoretical nitpicking and address the big, dangerous global issues at hand.

The promised benefit — a leaner, less costly and more efficient federal government — is purely theoretical at this stage.

Specifically, it relies on so-called Majorana particles, which themselves were previously considered theoretical - work claiming that they had been discovered in 2018 had to be retracted.

"The study of finance was taken over by theoretical economists ... armed with highly abstract theories and models ... which helped to give an aura of scientific legitimacy to the activities of Wall Street firms and traders."

“The consequences of President Trump’s global gag rule are not theoretical,” Demant said.