Scientists are human, therefore they are capable of making mistakes. However, they could possibly use the theories or have certain ideas that would benefit their findings or even benefit their career. Another human fault that I see being played in the scenario is excitement. Due to the excitement of the discoveries, scientist might of faked some of the findings or observations to match up their discoveries or even let the excitement make rational choices. These were the first discoveries and their findings predicted being the oldest ancestor skulls, with this excitement, the scientist might have lacked their observations and protocols. You can see the faults because the lack of experiments on the fossils; they didn't question why specific parts of the skull were apelike, followed by the jawbone and teeth, on how they were human like.
The hoax was discovered back when scientist used a fluorine test to date the fossils in 1949. They continued to study the fossils to try and understand their meaning to science. With the measurements of the fluorine content of the fossils, they discovered that they were actually old. In 1953, there was a full investigation which led to the study of fabrication; and what they found was that the staining that were found on the burns was material that had previously been cut while being a fossil. The jaw was found to be an orangutan while the teeth were of a chimps; which was also part of a suspicious activity because they looked like human teeth.
I don't think it is possible to remove the human factor from science to reduce the chance of error. Humans are bound to make mistakes, and many people believe that mistakes shouldn't happen or occur, however, many fail to realize that mistakes is what pushes us to think and try harder. It wouldn't make sense having something non human take part in scientific experiments, that alone is always open to making mistakes. Humans are more open to discovering new things and different theories because their findings are things that can help not only other humans, but themselves as well. Science consists of conducting research and findings and testing their evidence. Therefore, I believe that human factor should not be removed from science.
The lesson that I took from this historical event is not always taking things at face value. There will always be people with different opinions, positive or negative, but you have to learn how to deal with it, regardless if you agree or not. Bias is something that is very big and despite their reasons for it, they will always have a motive for their thinking and believing. This leads to the scientific community, scientists must come to a positive conclusions which leads to why scientific theories must be falsifiable. The Piltdown Hoax has taught us that we cannot trust other's works, if they don't have the capacity to provide whether their observations are true or false.