This shows how little experience you have of the legal system. Everyone who doesn't know expects the law to be precise, everyone who works in it knows how imprecise it is and sometimes that is deliberate because of all the variables involved that might mitigate or aggrevate the charge, assuming there even is a charge.

The difference between tax evasion and tax avoidance might be the smallest proveable piece of evidence. A word, an email, an assumption, an ommission etc.