CAreful Jazzns. You guys are shooting past each other on this point:
Brian writes:
Now, where is the irrationality in my statement. Nowhere, it is completely rational to conclude that if someone is arrested then they have broken the law.
You're arguing from two different legal systems. Under British law, an arrest is
de facto presumption of guilt. The burden of proof in a trial is on the
defense to prove the accused DIDN'T commit (or couldn't have committed) the crime. Under the US system, the burden of proof is on the
prosecution to prove the accused committed the crime beyond reasonable doubt.
US: Innocent until proven guilty.
UK: Guilt presumed until proven innocent.
It's obviously more complicated than that, but that's the gist. So Brian is correct: under the British system, it is rational to assume the individual is guilty of a crime if arrested.
/side comment