That is what I assumed before watching it, however they based their experiment on known facts, like what kind of structure could support a human body in such a position, weight bearing capacity, etc. I cannot recall all the details, but I do remember their results made sense.
If by ‘experiment’ you mean “a farce made up 90% of much praising of Simcha Jacobovici’s asterisk cross because he was so insistent on having his theory validated that they didn’t really exhaust all other possibilities,” then yeah.
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If there is anything in that documentary, “known facts” is not it.
And really I dont think the shape of the actual cross is that important, we know it was a wooden structure, Jesus carried a section of it thru town, and he died on it.
Theologically it’s not important whatever shape or height Jesus’ cross is, yes.
Academically speaking, however, what Mr. Jacobovici pulled in the documentary is SLOPPY scholarship at best and DECEPTION at worst: (no amount of bolding or uppercaps could express how I’m so annoyed right now

)
he never once mentions that there are texts and artistic depictions predating the 4th century that do show the Roman cross to be T- or t-shaped just so he could bandy around his ‘asterisk cross’ theory which has no support in any ancient text whatsoever. Seriously, his only ‘proof’ for the asterisk cross is the chi-rho (☧) and the IX monogram (
https://upload.wikimedia.org/wikipedia/commons/thumb/9/99/Christliche_Symbolik_(Menzel)_I_193_4.jpg/20px-Christliche_Symbolik_(Menzel)_I_193_4.jpg), which were never even depictions of Jesus’ execution device in the first place!
Heck, that’s why the documentary was so focused on experiments - because if Mr. Jacobovici had actually done his homework he would very well see that there is
no text or artwork from the Roman period - Christian or pagan - that shows the
crux or the
patibulum to be X-shaped, much less asterisk-shaped. When they do describe the shape of the cross they consistently depict it as a T or t. ‘Experiments’ is what all he’s got.
(St. Andrew’s cross doesn’t count: the idea that the apostle Andrew was crucified on an X-shaped cross was only something that came about during the Middle Ages. Early texts and artworks show Andrew crucified on the same kind of cross as Jesus and other apostles who were crucified: a t.)
Learn fully then, children of love, concerning all things, for Abraham, who first circumcised, did so looking forward in the spirit to Jesus, and had received the doctrines of three letters. For it says, “And Abraham circumcised from his household eighteen men and three hundred.” (Gen. 17:23) What then was the knowledge that was given to him? Notice that he first mentions the eighteen, and after a pause the three hundred. The eighteen is
I (=10) and
H (=8) - you have ‘Jesus’ (
IHCOYC) -
and because the cross was destined to have grace in the T (=300) he says “and three hundred.” So he indicates Jesus in the two letters and the cross in the other.
- Epistle of Barnabas 9.7-8 (AD 70-131)
Men weep and bewail their lot and curse Cadmus over and over for putting Tau into the alphabet, for they say that their tyrants, following his figure and imitating his build, have fashioned timbers in the same shape and crucify men upon them; and that it is from him that the sorry device gets its sorry name (
stauros, cross).
For all this do you not think that Tau deserves to die many times over? As for me, I hold that in all justice we can only punish Tau by making a T of (i.e. crucifying) him.
-Pseudo-Lucian (ca. 125-after 180),
Trial in the Court of Vowels aka Consonants at Law
The quotes above, the picture above right there,
are the known facts. Not Simcha Jacobovici’s
purely hypothetical fantasy.
Sorry if I sound very snarky and hotheaded here, it’s just that this kind of pseudo-science (I won’t mince words) really, really,
really annoys me. I wouldn’t have an issue with the documentary at all if Mr. Jacobivici had actually backed up this thesis of his with solid arguments instead of ‘experiments’ that were not even completely exhaustive or performed properly. Hell, the Jehovah’s Witnesses’ idea that Jesus was hung on a torture stake? Even
that at least has some foundation in the ancient texts than Mr. Jacobovici’s asterisk cross theory.
I’m no scholar, I’m just a random person on the internet, but even
I know where to look when I want to find ancient references to crucifixion. I know that we do have references regarding its shape.
So why is Simcha Jacobovici pretending that the t cross we are all familiar with was a post-Constantinian, post-4th century invention that came about after crucifixion was no longer a thing (that was what he pretty much said at the end of the documentary)?