It may be that certain theorems, if they prove true, are intuitively delayed

Progress in specific areas. Lloyd Trefethen provides two examples:

- Faber's theorem on polynomial interpolation
- Squire's theorem on hydrodynamic instability

Trefethen, Lloyd N. "Inverse Yogiisms".

Notes from the American Mathematical Society63, no. 11 (2016).

Likewise:The best typeface on math2017 6 (2017): 28.

Google Books Link.

In my own experience, I have seen the various negative results sets

Marvin Minsky and Seymour A. Papert.

Perceptrons: An Introduction to Computer Geometry, 1969.

WITH Press.

hamper progress in neural network research for more than a decade.^{1}

, What are other examples of theorems, their (correct) evidence (possibly temporary)Q

Suppression of research in mathematical subfields?

^{1}

Olazaran, Mikel. "A Sociological Study on the Official History of the Perceptron Controversy."

*Social science studies*26, no. 3 (1996): 611-659.

Abstract: "[…]I particularly focus on the evidence and arguments of Minsky and Papert, interpreted as meaning that further advances in neural networks are not possible and that this approach to AI has had to be abandoned.[…]"

RG-Link.