A judge must assess every piece of evidence on its own merit. He or she can’t simply decide that because they took a particular approach to one piece of evidence, they must take the same approach to all pieces of evidence.
I agree and I didn't say the judge must treat all evidence the same way. As I say, in the instance I quoted, the judge may have good reasons for taking a different approach to Depp's evidence than he does to Heard's.
And no, a judgment wouldn’t always include a detailed explanation of why one piece of evidence was preferred over another
It should at least include some information otherwise the reader may conclude that the judge's decision is simply arbitrary.
I do understand the process. I have read plenty of judgements in my time and have explained some on here, mainly in criminal cases. I repeat that I am not saying that the judge was wrong, but I can see why Depp's lawyers believe an appeal could succeed.
So you are 100% sure that he has never ever laid a hand on her?
Speaking personally, I would not need to be 100% sure that Depp has never assaulted Heard to say that I thought he judge was wrong. If I thought the Sun had failed to prove that, on the balance of probabilities, Depp assaulted Heard on multiple occasions, I would have to say that I thought the judge was wrong. That is very different from saying that I was sure Depp had never assaulted Heard.
Note again that I am not saying that the judge is wrong, nor am I saying he is right. Whilst I can see the transcripts and some of the witness statements, I do not have access to the full trial bundle, nor was I in court so I did not have the same opportunity as the judge to assess the credibility of the witnesses.