'That means in the Post Office example, people were convicted because they couldn't prove the software had bugs, they were just saying "you have to prove I'm gu

'That means in the Post Office example, people were convicted because they couldn't prove the software had bugs, they were just saying "you have to prove I'm guilty, because I'm not", and the court said "no, we don't, computers are reliable and that proves you are lying and therefore guilty".' Not sure this is true, people were mainly convicted because they pleaded guilty to avoid going to jail. There may be instances where you are correct but I'm not aware of any? The general rule of being innocent unless proven guilty does, generally, hold. The issue with these cases is that many people convicted early on had no proper legal representation. Alan Bates, for instance, refused to accept the charges and was never convicted because no evidence of his guilt was ever presented. He stood his ground and was an outlier case.