Uh, no. No, it isn't. To quote from section 8, "Conclusion": "Four distinct transput primitives have been identified: passive input, active output, active inpu

Uh, no. No, it isn't. To quote from section 8, "Conclusion": "Four distinct transput primitives have been identified: passive input, active output, active input, and passive output". The point of the paper is that usually the passive primitives are not available to the user. Their "read only" simply means passive out, active in - which supposedly reduces complexity in most cases.