One should keep in mind that many times, the way a particular script is written; angles, direction, etc. have to do with the surface upon which they were first written. Germanic runes, for example, are very angular; no round shapes. This is because they are originally carved on staves of wood; hard to get rounded shapes without messing up the wood. Just food for thought.
Thanks Kavik
Yep we noted that problem too
This is why it took seven years to develop a reliable test.
First we needed to find samples that had enough lines on them to be tested (samples with over 100 lines were rare but they are a few scattered around the world).
Then we often had to either retake photographs to confirm the sample was being observed correctly.
As a note one early sample was a petroglyph in Hawaii, which seemed to fail the test, but then after visiting the site to see why it had failed we realized the petroglyph was high up a wall and the original photograph had been taken from below. When the wall was rephotographed, it was found the lines aligned as expected to the angular array.
Just now we are waiting for the museum staff to retake some photographs of message sticks in Australia, because the original photographs were not taken directly above the samples.
In the examples where we could access artefacts that had lines on more than one side we found we could do blind tests to confirm the patterns on all sides were aligning to the same angles.
One of the earliest studies was published in Popular Archaeology. At that point in the analysis the idea was being developed, and it was unclear if the idea could survive further testing
https://popular-archaeology.com/art...umental-complex-exhibits-astronomical-values/
Since then there has been multiple collaborations with (for example) Wiltshire Museum in England (This is the Museum linked to Stonehenge) and with the Scottish Government (to access detailed images of the Stone of Scone). The research is also backed by Martin Schoyen (who owns the world's largest private collection of ancient writing) who helped undertake some blind tests on archaic Australian scripts.
In total over 100 Stone Age artefacts have now been analyzed, and the data is quite consistent. Actually I think the data from Lascaux Cave gave fantastic data, as the geometrics suggested they were part of an initiation, where the more complex astronomical values were found deeper in the cave.