Feynman argues that the natural world is capable of producing structures, behaviours and phenomena that exceed what people might expect or invent from intuition alone. Scientific discovery repeatedly reveals possibilities that can appear unfamiliar or surprising because human imagination is shaped by limited experience.

The quotation therefore expresses both wonder at nature and caution about relying too heavily on intuition. In science, an idea cannot be rejected simply because it seems strange, nor accepted because it fits familiar expectations. Observation and experiment provide the stronger test. Feynman’s point also reflects intellectual humility: human concepts are attempts to describe reality rather than limits on what reality can contain. The remark can be applied whenever new evidence challenges established assumptions, reminding us that nature is not required to conform to what seems plausible or easily imaginable.