I like chatting with you Yuzima, you take a balanced approached.
Not every aspect of evolution can be explained away through shifts in environment. Many features of the living organisms that exist on Earth can be chocked to smart convenience… as if they were designed and not spontaneous ad-hoc features.
As if they were designed.
But what if life on Earth was designed and also had spontaneous ad-hoc features?
Would the first paths of life in the Universe have been designed to be egg-shell based and then evolved to use internal womb births as an ad-hoc feature?
Look at most eggshell based eggs on Earth, most are shaped like a tear drop. Such a design could lead to the design of the eggshell having been designed like the tear drop for certain gravitational circumstances. On other planets, the eggshell could be more round, possibly square on a flat Earth type of plane and even shaped with numerous sides, after all doesn’t God play Eve Online and roll the dice?
No, but seriously, the womb concept of creating and carrying life in the female body, that’s understandable, as such a design would allow the human female to be more nomadic when looking for food, while not being limited to a certain distance from the nest to hunt for food, very limiting. But with the human design, the human female would not have to worry about her child being too far away from her as the child would be in her womb until born. A very convenient ad-hoc design? Did a human female develop the internal womb due to an increase in brain size after observing dinosaurs could only chase or hunt their prey within a safe distance from the nest? Or did the internal womb come with the first human female?
Another question of design is the egg itself. With nearly all dinosaurs giving birth to their young via hard shelled eggs, the base of such a design, seeded in all dinosaurs’ brains would be to collect enough calcium carbonate crystal units to create eggshells from. This means that all dinosaurs that laid eggs would have been cut from the same sheet of cookie dough or evolved from the same glop of dino stuff before dinosaurs were dinosaurs. I’m definitely seeing a manifold of sorts with the base for the manifold peaking in different directions to create different dinosaurs with that center being the ability of dinosaurs to collect calcium carbonate crystal units and convert the material into eggshells.
The next question is, when would calcium carbonate crystal units have been accessible to early dino glop? I don’t know the scientific term for it. At what point would CCC ( calcium carbonate crystal units) have been viable enough for cellular life to use the material to create eggshells? Or what time period on Earth was calcium carbonate crystal units the most accessible for use?
Why two blueprints though, one for the semi-mobile egg layer and one for a free range of movement internal womb?