<P> A simpler and more direct way to explain the fundamentals of the "hierarchical organisation of life", was introduced in Ecology by Odum and others as the "Simon's hierarchical principle"; Simon emphasized that hierarchy "emerges almost inevitably through a wide variety of evolutionary processes, for the simple reason that hierarchical structures are stable". </P> <P> To motivate this deep idea, he offered his "parable" about imaginary watchmakers . </P> <Dl> <Dd> <Table> <Tr> <Th> Parable of the Watchmakers </Th> </Tr> <Tr> <Td> <P> There once were two watchmakers, named Hora and Tempus, who made very fine watches . The phones in their workshops rang frequently; new customers were constantly calling them . However, Hora prospered while Tempus became poorer and poorer . In the end, Tempus lost his shop . What was the reason behind this? </P> <P> The watches consisted of about 1000 parts each . The watches that Tempus made were designed such that, when he had to put down a partly assembled watch (for instance, to answer the phone), it immediately fell into pieces and had to be reassembled from the basic elements . </P> <P> Hora had designed his watches so that he could put together subassemblies of about ten components each . Ten of these subassemblies could be put together to make a larger sub-assembly . Finally, ten of the larger subassemblies constituted the whole watch . Each subassembly could be put down without falling apart . </P> </Td> </Tr> </Table> </Dd> </Dl> <Dd> <Table> <Tr> <Th> Parable of the Watchmakers </Th> </Tr> <Tr> <Td> <P> There once were two watchmakers, named Hora and Tempus, who made very fine watches . The phones in their workshops rang frequently; new customers were constantly calling them . However, Hora prospered while Tempus became poorer and poorer . In the end, Tempus lost his shop . What was the reason behind this? </P> <P> The watches consisted of about 1000 parts each . The watches that Tempus made were designed such that, when he had to put down a partly assembled watch (for instance, to answer the phone), it immediately fell into pieces and had to be reassembled from the basic elements . </P> <P> Hora had designed his watches so that he could put together subassemblies of about ten components each . Ten of these subassemblies could be put together to make a larger sub-assembly . Finally, ten of the larger subassemblies constituted the whole watch . Each subassembly could be put down without falling apart . </P> </Td> </Tr> </Table> </Dd>

What are the six levels of organization for ecology in order from smallest to largest