Complex sentence: The PCE has been criticized for being vague, unmathematical, and for not making directly verifiable predictions; however, Wolfram's group has described the principle as such, not a law, theorem or formula.
Split into simpler sentences: The PCE has been criticized for being vague, unmathematical, and for not making directly verifiable predictions. However, Wolfram's group has described the principle as such, not a law, theorem or formula.