A , Complete denial there is any molten steel because fire cannot reach high enough temps. ( john gross Nist etc) . Meaning the buildings collapsed without temps hot enough to melt steel but was the result of expansion and warping simultaneously shattering the joints. ( contradicting B and C )[\quote]
Misrepresentation of the facts. Temps in the aviation fuel initiated office fire reached ~1,000 degrees. This is well into the range required to soften steel enough to lose the majority of its structural strength. E.g. A stick of butter can support quite a bit of weight until it softens.
B Acceptance of molten steel , but it was caused plane impact and raging fiires , meaning that simple fire can reach temperatures capable of melting steel thus causing a collapse. ( contradicting A and C)
There was no molten (or formerly molten, now solid) steel. There was plenty of formerly molten, now solid aluminum, tin, lead and other metals all commonly found in office buildings and all with melting points well under 1,000 degrees.
C Reactions underground after the collapse . Meaning that the molten steel appeared "after" the buildings collapsed and so was not a factor in the
collapse( contradicting A and B ? )
Fallacy of the Excluded Middle.
So it seems the debunkers can't agree which is the true debunking theory , because to accept any option you needs to dismiss the other 2. If you accept A then B and C become false etc etc.
Does your friend apply the same criterion to the multiple and contradictory Truther hypothesis (space lasers, holograms, missiles, etc)?
The vast majority of Truthers spend the vast majority of their efforts on pointing to imagined "flaws" in the "official story." For some reason, this is in place of simply providing evidence to support the own POV. Their argument, if not X therefore Y is fallacious.