"Every day we live is like science experiment. We set hypotheses and our expectations. We try to control the variables. Some are controllable. Some aren't" says the main character, as he does exactly none of the things he is talking about while conducting his own research and experiment. No hypothesis, no control over variables (which weren't even named). They didn't even define what they are researching - ghosts.

For someone who does not know anything about scientific methods, this would be a really good horror thriller focused on the dark side of humans and their desires, fears and obsessions, with the use of supernatural elements. It was well produced, the set design, costumes and the design for the ghost were truly nice and well prepared.

For anyone who knows a bit about scientific methods... it would be frustratingly dumb and unrealistic, and not because of the ghost and supernatural elements. Here's the thing: you cannot make the main characters people of science (I would call a person who finished medical school one) while making them conduct research as well planned and executed as flat earthers do. Writers should have either made the research more realistic (especially at the beginning, were Wee was not that obsessed and emotionally attached to it - hence he should have been more objective) or made main characters normal people who did not have much to do with science in the first place - then the poorly conducted experiments would make sense.

It was like watching people fight for who is going to get Darwin Award first - both deserve it equally. Since I was frustrated with the set up and the massively flawed and senseless research at the beginning, it was hard for me to connect to the characters and actually care about what will happen to them and how the movie would end.

Overall, if you either: don't know much about scientific method of research or are able to ignore that part of the plot and not put much value to it, you will most likely like it or even love it. Sadly for me, poorly done science done by people, who should know better, frustrates me to the core.