This document discusses citizen science and heuristic strategies for science research. It describes citizen science as public participation in collecting and analyzing scientific data to help address large-scale research questions. The document outlines three categories of citizen science projects and discusses how citizen science is growing in impact and methodology. It also examines John Dewey's views on experience, pragmatism, and empirical naturalism. The document proposes that citizen science experiences align with pragmatic heuristics and explores how Pierce's theories of abduction and diagrammatic reasoning relate to citizen science.