The evidence is entirely circumstantial hence it does not hold water.
Evidence is a proof required in a court of law in order to establish the validity of a claim. It helps to conclusively assert that a convict is guilt as charged.
The evidence is weak and does not hold water for the following reasons;
John Doe could have been in the bank for other reasons that day.
The previous record of John Doe may not have any record of dubious behavior.
The hair evidence is entirely circumstantial.
Learn more about evidence in court: https://brainly.com/question/11149708