Kent Hovind Debunked: "Evolution Is Just a Theory" Argument
"Evolution is just a theory, not a fact. Scientists can't even agree on it."
In everyday English, “theory” means a guess. In science, a theory is an extensively tested explanation supported by a large body of evidence. Gravity, germ theory, and plate tectonics are all “just theories” in the same sense.
The scientific meaning of “theory” refers to a well-substantiated explanation of some aspect of the natural world that incorporates facts, laws, inferences, and tested hypotheses. The National Academy of Sciences defines a scientific theory as “a comprehensive explanation of some aspect of nature that is supported by a vast body of evidence.”
The evidence for evolution includes:
- The fossil record, showing transitional forms across geological strata
- DNA and molecular biology, revealing shared genetic heritage across species
- Direct observation of evolution occurring in real time (antibiotic resistance, Darwin’s finches, the Italian wall lizard)
- Biogeography — the distribution of species across continents matches evolutionary predictions
- Comparative anatomy — homologous structures across species
Hovind’s conflation of the colloquial and scientific meanings of “theory” is a well-documented equivocation fallacy. No credible scientific institution disputes that evolution is both a fact (species change over time) and a theory (the mechanism by which it occurs is extensively documented).