2nd module: Moon Machines
What I found most interesting
about the documentary on NASA and the Apollo Navigation Computer is its
similarity with many modern software projects. I specially mean modules or
complete systems that are vital to a product or company that are not thought
carefully, eventually creating a “technical debt” that paid for the rest of the
project. This can be considered normal within the software industry now (unfortunately),
whether it’s with a small team or an army of programmers in big company. I,
however, think that the factors that caused that in the NASA project were a
product of their time.
Up until that point, no one had
seemed to care about the quality of the software being written. The documentary
implies that it was just an afterthought, even programs that would make the
Lunar Lander function properly. Most of the attention was given to the physical
components, such as transistors. I believe that, because that technology was
like a new “toy” from a relatively new area of industry, no one had really
given a thought about what kind of stunts could be pulled off with it besides
very basic tasks. It was more important that the components could survive the extreme
temperatures and pressure changes, that they fit inside the spacecraft, etc.
Besides, the Apollo Project seems
to be at a frontier between times. One was the time dominated by analogical
products, the other, by digital products. I find it very curious that the team
decided to use a variety of old techniques and instruments for guidance, such
as a sextant. I think everyone feels safer today knowing that almost all
transportation means, such as planes, trains and buses, can rely on computers
for guidance. It would seem that the scientists, engineers, and technicians
felt safer knowing that analogical technology would guide the rockets. Maybe
they were afraid of something so new and that had not proven its true potential
yet.
These two situations (priority on
other parts of the module and lack of knowledge in an area) can be used to
describe a lot of software projects that fail. In the case of the Apollo
Program, it almost made the team miss the deadline on when to get a man on the
moon. While the design was eventually corrected and the mission was a complete
success, the damage could have taken human lives. Nowadays, many software
projects can involve very delicate operations that involve humans. If we want
to advance as an industry, we must create and stick to efficient ways of
designing software with quality.
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