It Can't Happen Here Is Always Wrong:

No Particular Theory May Ever Be Regarded As Absolutely Certain.... No Scientific Theory Is Sacrosanct.

There Will Be Well-testable Theories, Hardly Testable Theories, And Non-testable Theories. Those Which Are Non-testable Are Of No Interest To Empirical Scientists. They May Be Described As Metaphysical.

The Influence (for Good Or Ill) Of Plato's Work Is Immeasurable. Western Thought, One Might Say, Has Been Platonic Or Anti-platonic, But Hardly Ever Non-platonic.

The Open Society Is One In Which Men Have Learned To Be To Some Extent Critical Of Taboos, And To Base Decisions On The Authority Of Their Own Intelligence.

The Initial Stage, The Act Of Conceiving Or Inventing A Theory, Seems To Me Neither To Call For Logical Analysis Nor To Be Susceptible Of It.