It's evidence. I can point you to tons of cases of eye witnesses providing faulty testimony (in good faith, not to mention those who lie). Is there an oracle

It's evidence. I can point you to tons of cases of eye witnesses providing faulty testimony (in good faith, not to mention those who lie). Is there an oracle that will tell you who committed the crime? No. But it seems odd to be OK with some forms of evidence that are even more unreliable than this, if your issue is about reliability.