Therefor, though developmental processes are highly interactive, context dependent and extremely complex, it is incorrect to conclude main effects of heredity and environment are unlikely to be found in the "messiness". Sesardic argues that the idea that changing the effect of one factor always depends on what is happening in other factors is an empirical claim, as well as a false one; for example, the bacterium Bacillus thuringiensis produces a protein that is toxic to caterpillars. Genes from this bacterium have been placed into plants vulnerable to caterpillars and the insects proceed to die when they eat part of the plant, as they consume the toxic protein.