And that's because if we examine, for example the female reproductive system we know that somehow this collection of cells that creates the Ovaries knows its function. What the Ovary does is it helps develop that primary follicle into a secondary follicle and the follicle eventually ruptures releasing that xcel, the secondary OASI into another structure known as the fallopian tube. And the fallopian tube somehow knows to carry this xcel along the canal where fertilization takes place in this section. And then that zygo travels into the uterus and inside the uterus we have that endometrium that the zygote implants into. And so the uterus functions to actually provide the nutrition that is needed for that zygote to actually grow. So the question is how exactly do these collection of cells know to carry out a specific type of function?