Chapter 8 of Ethics for the Information Age discusses the importance of computer reliability and the various ways errors can cause poorly engineered systems to fail. In The Maze Runner, all of the technologies depicted work exactly as the creators intended, and so it is unlikely that the film is trying to communicate any message on this topic.

However, if one of the technologies shown in the film did end up failing, it could have had drastic consequences. For example, if one of the doors was unable to close one night, then Grievers could easily kill some or all of the Gladers, ruining the experiment. Similarly, if Grievers unintentionally came out during the day, many of the Gladers could be killed. If the elevator that sent supplies to the Gladers malfunctioned, then they could run out of resources and die.

The intended length of the experiment and the number of experiments are also important to consider to the reliability of the maze. The movie makes it seem like the experiment was only supposed to last for about three years, as Thomas and Teresa are said to be the last two to ever enter the maze, and there were approximately 35 Gladers before them (based on the wall of names), at a rate of one per month. However, they might not be the first group in the maze. One piece of evidence to suggest this is the deterioration of the concrete walls of the maze. Concrete can last for about 30 to 100+ years, depending on environmental conditions, and since some walls are starting to deteriorate, it is likely that they were built much more than three years prior, which would allow time for previous groups [1]. Thus, the components would need to last much longer than three years, or perhaps just be repaired in the times between groups.

The more important point is whether or not the experiment was successful in its end goal, which was to help find a cure for the Flare by monitoring the Gladers' brain activity. Although they say that the first phase was a success, this referring to the Gladers' escape, rather than finding a cure. The success of the cure is likely explored in the two following films in the trilogy, but it is not mentioned in The Maze Runner. It brings up the question of whether the experiment was worth it, since it wasn't guaranteed to end up achieving its goal. Many lives were lost before they managed to escape, and if they didn't escape then they all would have likely died. WCKD didn't seem to care about losing lives in the process, as they were surprised that so many Gladers made it out alive, despite a survival rate of around 20% (8 survivors / at least 37 Gladers). How certain were the experimenters that their plan would have worked, and how certain should they have been before undertaking the experiment?

References:

[1] "The Average Lifespan of Concrete", Davis Concrete Correctors, (February 2017), http://davisconcretecorrectors.com/2017/02/the-average-lifespan-of-concrete/