Why antacid tablets did not offer a survivable escape
The test involving antacid tablets ended with a distinction between damaging a cell and escaping it alive. Adam and Jamie observed pressure bend a door severely, but they also identified fatal hazards for a prisoner on either side of the plastic lining. Inside it, the released carbon dioxide could rapidly overcome and suffocate the person. Outside it, pressure from the expanding bag could cause compressive asphyxia or fatal internal injuries. The outcome therefore cannot be reduced to whether the door moved. The question of survival belongs at the center of the result, alongside the unusually large amount of material involved.
The investigation began with bench-scale tests. Adam and Jamie examined how the volume and pressure of the released gas related to the number of tablets and the size of the container. Meanwhile, the crew built a prison cell in a naval shipyard warehouse. It included plumbing fixtures and a door made from thick, bullet-resistant plastic. These details establish that the experiment moved beyond a small container to a constructed cell. They also help explain why a result at the bench could not settle the larger question by itself. The full-scale setting had its own outcome, including an initial absence of pressure.
In the small-scale test with antacid tablets, a glass box lined with airtight plastic sheeting lost its sides to gas pressure. This was a visible demonstration of the gas doing damage in that particular enclosure. It was not yet a demonstration of a survivable escape from a cell. The distinction is easy to keep in view if the result is described at the scale where it occurred. The box's sides blew out, and the investigation continued. Moving from that observation to a claim about a prisoner would require addressing both the larger enclosure and the consequences for the person inside it.
The first full-scale attempt supplied a different result. Adam and Jamie used 22,000 tablets, described as roughly 10 years' worth based on the provision of two tablets with every meal. Despite the large supply, they saw no rise in pressure in the plastic-lined cell. They suspected that gas was leaking around the plumbing pipes. That suspected explanation belongs in the account as a suspicion, rather than a certainty stronger than the reported wording. The important observation is plain: the full-scale attempt did not reproduce the pressure effect seen in the small box. The quantity alone did not make the outcomes match.
The later attempt involving antacid tablets changed the cell setup and used the equivalent of 100,000 tablets in solid and powdered antacid. This time, pressure peaked at 4 pounds per square inch. The door bent outward severely, and the lining burst at its lower edge. Those results gave the investigation an unmistakable physical outcome. Yet the event still did not establish a workable escape for a person. A bent door is evidence of damage to the enclosure; it is not a substitute for a conclusion about the prisoner's survival. Adam and Jamie's final reasoning addressed that separate and more consequential question directly.
Consider the position inside the plastic first. Adam and Jamie concluded that the carbon dioxide released from the tablets would rapidly overcome and suffocate a prisoner there. That hazard changes the meaning of the successful pressure buildup. For an escape to serve its stated purpose, the person would need to survive the process. The account identifies a mechanism that defeats that requirement even while the enclosure is being damaged. It is therefore reasonable to discuss the dramatic door movement and the fatal gas hazard in the same paragraph. They are linked parts of the same test, rather than competing versions of its outcome.
Standing outside the lining did not resolve the survival problem in the antacid tablets scenario. Adam and Jamie concluded that pressure from the bag against the prisoner's body would cause compressive asphyxia or fatal internal injuries. This is why their reasoning covers both possible positions relative to the plastic. The danger was not limited to breathing the released gas. The pressure that supplied the proposed escape force introduced a different fatal hazard on the other side. Combined with the unfeasibly large number of tablets, those conclusions explain why the investigation did not support the proposed escape, despite the severe bending of the door.
The useful way to read the antacid tablets result is to keep scale, damage, and survival together. A small box lost its sides. An initial full-scale attempt showed no pressure rise. A later attempt bent the door before the lining burst, but the investigators concluded that either position around the lining would expose the prisoner to fatal harm. Each observation adds something distinct to the account. None makes the survival question disappear. The final answer is therefore more informative than a simple report of a damaged cell: the experiment generated a dramatic effect without establishing a survivable way out for its intended occupant.