Theories require extensive testing and agreement within the scientific community. Theories are not described as true or right, but as the best-supported explanation of the world based on evidence.
https://manoa.hawaii.edu/exploringourfluidearth/physical/ocean-floor/continental-movement-plate-tectonics/practices-science-opinion-hypothesis-theory
The single bullet conclusion has been tested and agreed upon as the best-supported explanation by many scientific studies and has been that way for over sixty years. The Knott Labs study has not been tested or agreed upon by anyone other than Knott Labs.
it was tested based on what figures ? , if it is based on the warren commission and indeed Spectors theories and trajectories it does not and cannot work . this is the very reason the BACK wound has been falsely raised to the right of the neck . the HSCA later also knew it did not work and they deceived and had JFK leaning markedly forward before he first reacted . the Zapruder film shows that the lean only came after he first reacted .
when it comes to photos (or even film ) they can easily be deceptive , i mean in terms angles and perspective . photos taken from angles , overhead , offset to right or left can be deceptive . we know the jump seat was 2.5 inches inboard . jfks right arm was comfortably resting on the side wall of the limo . connallys right arm can be seen resting on the right side of the limo all be it it was not on it quite as much as JFKs which we would expect given the jump seat was a few inches inboard .
the commission and hsca etc agreed on the SBT , LN agree on it , that is hardly an endorsement of accuracy . all be it i recall a well known LN right here on this sight posting in reply to me saying he thought (i am not speaking verbatim now ) that the SBT was a nonsense . this was a very well known , very intelligent and very well researched LN here , a man very familiar with weapons , and he while saying Oswald did could not go along with the SBT . i feel sure some of the current LN here may recognize who i speak of . whether we be LN or CT or neither of those , if we use our eyes , our common sense , we will see a nonsense for exactly what it is . the SBT theory starts with a lie , an entry location where there provably was no entry wound . that alone nullifies it . and Connally and Russell did not buy it either . so we have to call a spade a spade here .