1 Eyewitnesses are highly reliable. 2 Fingerprint evidence is foolproof. 3 Human memories are reliable. 4 Innocent people never confess. 5 Police are objective in their investigations. 6 Guilty pleas are proof of guilt. 7 Prosecutors play fair. 8 Long sentences deter crime.
Source: Eight common myths that make the US justice system seem fairer than it is – Quartz