Simple organisms are not necessarily easier to imitate than more complex ones. Our vehicles can drive faster than the fastest animals, but no car can absorb nut

Simple organisms are not necessarily easier to imitate than more complex ones. Our vehicles can drive faster than the fastest animals, but no car can absorb nutrients across a cell membrane. The simpler a system is, the more an imitation has to stick to the specifics to the system's particular implementation. Larger, more complex systems can usually perform more abstract tasks, which allows more diverse approaches.