Genesis 1:1 says the heavens and the earth. Some people think that the creative days began on verse 2 and others on verse 1. If it is verse 1, then the rocks on earth cannot be older than the heavens. If it is verse 2, the earth could be much older than the life on it. Either way it is reasonable to conclude that the earth's creation included the rocks on it.
Vs 1 is a summary of all of it.
Vs 2 is intro to the back ground conditions here - just before day 1.
vs 3 is the start of day 1 - and begins with "an God said"...
So this leaves the universe being older than life on earth and it may also lead to the rocks on Earth being older than life on Earth.
Of course they are not embryonic, but they don't have to be the equivalent of a biological 24 year old either.
They have to be biologically as tall as an adult.
They have to be mentally as capable as an adult because in the text of Gen 3 - they are left alone on this planet and expected to 'Behave themselves" as man and wife. That is a rather mature human, not two infants laying in a pool of water.
If you met them you would not say "you look like you are biologically 2 days old"
Just accepting the text on the face of it.
It could be a "Blue Lagoon" age scenario meaning 14-16. People are attracted sexually to potential partners much earlier than 24, and can have children.
They are one or two days old when left alone on the planet and expected to behave well as man and wife alone on planet Earth. Trying to stretch the story against the natural reading of the text is not logical. Moses is writing the text for the Hebrews at the foot of Sinai and it is pretty clear as to the intent he is giving his readers.
Regardless of what age Adam and Eve looked, they, for all intents and purposes, their experience was no more than an infant
Not true. They had language, they had the ability to relate as husband and wife, they could worship God etc.
You are forcing your views into the text that is written to be accepted as it is and not bent to some unworkable oddity.
, and their mental development is not demonstrated in the narrative to be anything beyond juvenile.
Not true. Not only are the capable but you seem them in argument with Satan himself in Gen 3.
bending the text to the oddity of your scenario does not fit the text. Too much eisegesis in your suggestions.
Seth was born when they were at a documented age of 130, so they had definitely enough time to mature before having children.
More than enough time ... 130 years.
It's based on mathematical modeling, and known scientific principles. The modeling is very accurate, but what is not clear is the beginning state of most of these processes.
models are just that... models and faulty assumptions used for the baseline is the old "garbage-in, garbage-out" problem so well defined and proven in real life,
As tonychanyt demonstrated, they can plot a course to Mars remotely using known mathematics. They can work backwards with similar models, but eventually you get to a singularity state
too many assumptions in "working backwards".
IT is like saying I see you driving west -- if I work that backwards you started your trip in China.