“Common ancestor thing?”
Every bilateral animal on Earth shares most of the same HOX genes for head formation.
The genes tells the head to form, including the same exact spots on the head for the first pair of eyes, and then the nature of each segment from the head to tail. In arthropods, it’s the nature of each segment and its limbs. In vertebrates, it’s each vertebral segment. In most mollusks the body segments are erased, and there’s no segmentation in the complete embryo.
“The chance of another sophont evolving a biped stance exactly like humans (instead of velociraptors, a more stable biped), and even more improbable, having a breathing mouth with nostrils (most animals on Earth have respiratory systems completely separate from the digestive system), was so preposterous that teenage me rejected it.”
Most animals on Earth have a face with eyes, but their bodyplans are radically different from each other.
RE: https://noauthority.social/@StarProphet/115705402561844232
@StarProphet just one more and it ties Atlantis and 8 more to be the most reused spacecraft ever
I rejected the UFO craze, before the age of hi def smartphone cameras.
The chance of another sophont evolving a biped stance exactly like humans (instead of velociraptors, a more stable biped), and even more improbable, having a breathing mouth with nostrils (most animals on Earth have respiratory systems completely separate from the digestive system), was so preposterous that teenage me rejected it.
And after the Q posting on Jim's Blog, my standard for this is real physical evidence.
@[email protected] @StarProphet I got to see this launch in person from KSC!!
“Be warned, if Elon shows up to the mother of all demos in a flying saucer with an antigravity engine I am going to be a thousand times more smug going forward.”
If Elon had propulsion technology similar to that depicted in Corcoran’s Aristillus novels, he would be building that for SpaceX Starship, instead of Raptor 3 FFSC rocket engines. The propulsion section under the payload section would just be a few meters long in an SSTO antigrav vehicle. Basically, the full antigrav Starship would look like this 👇, instead of a long 2-stage skyscraper of fuel.