Irrefutability is not a virtue of a theory (as people often think) but a vice.

A more serious objection to Freudian theory is its supposed irrefutability.

These hybrids have the irrefutability of dreams, and the same power to disturb.

Like all utopian promises, eugenics disguised its essential dystopianism in the language of order, rationality, cleanliness and the irrefutability of science.

However, the fundamental flaws of this hypothesis were the typical ones that disqualify it as a scientific theory-namely, insufficient specificity and precision of the predictions in relation to statistically expected levels, and inherent irrefutability, the combined effect being non-falsifiability.

It is an interesting question whether or not such competitive belief systems can be replaced with truth; truth, like the belief systems, is irrefutable, but its irrefutability is not a function of emptiness, of cognitive vacuity, but of its rectitude.