Evidence In A Guilty Case

After watching the video, I have to say that I am disappointed with the prosecution team. Naturally there are many cases when new evidence would come in after a case would be done and that would take things in a whole new direction and maybe give the guilty party a chance to prove themselves innocent. Thats fair and understandable since the new evidence that came in proves that the person didn’t do the crime. Evidence is always helpful in a trial and both the defense and the prosecution will use it to their advantage as best as they can. But the evidence needs to be actual prove instead of something circumstantial. The defense and prosecution can’t just launch a trail with nothing but theories in for example a murder case. The prosecution can say that a man killed his wife.
Naturally for numerous reasons. But where is the prove? The weapon, witnesses, DNA, Background records, search history? If the evidence is real then all of those can lead to a conviction and that would be the end of that. However during the Casey case. The prosecution made a false statement and they didn’t even bother to fix it. The computer analyste did notice that he did make a mistake and told detectives and prosecutors and they didn't listen at all. Every bit of evidence will always help in a case even if it didn’t really work for them. However every honest piece of evidence is important and they should do their jobs as best as they can instead of rushing it and maybe even throwing the wrong person in jail. A sloppy mistake like that can ruin a person's life for a very long time to come and in this business they want to avoid making a mistake like that. Telling the court that they gave false testimonies is 100x better than sending the wrong person to