I have evidence. Look at what Ned_Flanders said:
This proves beyond a shadow of a doubt that scientists from Wuhan's "Institute of Technology" just sat on their bums while Chinese citizens were massacred by COVID-19.
However, I will concede that there is no smoking gun (at least not yet, or maybe never) when it comes to Wuhan's "Institute of Technology" being the origin of COVID-19. However, the circumstantial evidence, however, is highly, highly disturbing. And, one fact remains i.e. that the "institute" was, FOR A FACT, conducting experiments/research into SARS-related viruses spread by bats. That is a fact! On that basis, it is not entirely implausible that COVID-19 did, in fact, originate from Wuhan's "Institute of Technology" due to negligence which is the institute where scientists, according to Ned_Flanders, just sat on their arses while Chinese citizens were being killed left, right and centre.
I don't think you're a lawyer by profession either (I am now curious what your profession is) because it can't be circumstantial evidence because you don't have that either.