Furthemore, the occurrence of multiple "inventions" suggests that there has been more than one designer. Vertebrates and most cephalopods have camera eyes, but they form in different ways and have different architectures. Birds, bats, pterosaurs, and insects all have different wing architectures, even though the three vertebrate groups have wings formed from front limbs. Etc.
There is also evidence of lack of foresight, like land vertebrates laying eggs though their pelvic girdles. In some of them, this became giving birth, something which can be awkward when the baby is relatively large, as is the case for our species.
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