executive programs can be built within the main flow providing that input and output conditions are well defined. Could this be how human DNA controls the unfolding of an emergent creature inside an egg without any apparent means of cell differentiation, all cells being otherwise identical? It would imply telepathy between cells or something similar, wouldn't it? If not this, then how else is the process controlled? Why doesn't the creature end up as a bib blob of identical cells? What mechanism controld their differentiation and where is its program stored if all cells are identical?