You are missing the point. A modern man went to the site where he thinks he found the Arc, and announced his find was exactly 300 cubits long. WE, as in WE people now living, do not have any idea how long Noah’s cubit happened to be. It is exactly like saying, “Hey, this is exactly as long as Montezuma’s winter blanket”.
Also, recall the Ark was not designed for multiple trips. It only had to survive the initial cruise.
——>WE, as in WE people now living, do not have any idea how long Noah’s cubit happened to be.
Sure we do...
from the link I posted:
The ancient cubit measurement, which Noah used in constructing the Ark, would almost certainly have been the same as that which was used by the civilizations which arose from the descendants of the survivors of the flood.
The ancient cubit has been identified as measuring 0.5235 metres (20.6 inches), and has been found to be the unit measure which was used in the construction of the pyramids in Egypt, and in Solomon’s palace in Israel. By converting the length of this ancient cubit, into metres, the dimensions of the Ark, would be as follows:
LENGTH: 300 CUBITS = 157 METRES (515.9 FEET)
BREADTH: 50 CUBITS = 26.2 METRES (85.7 FEET)
HEIGHT: 30 CUBITS = 15.7 METRES (51.6 FEET)
WE people now living, do not have any idea how long Noah’s cubit happened to be.
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Au contraire:
“The cubit, generally taken as equal to 18 inches (457 mm), was based on the length of the arm from the elbow to the tip of the middle finger and was considered the equivalent of 6 palms or 2 spans. In some ancient cultures it was as long as 21 inches (531 mm). “
https://www.britannica.com/science/cubit