Statutory recognition of engineers would mean that no one could practise engineering unless they were licensed or registered to do so. However, if the functions performed by engineers are to be controlled by statute, they would have to be clearly defined – something that has proved impossible, except for a few specific occupations (eg, dam designers, certificated marine engineers and mining engineers). It is worth noting that a person doesn’t have to be a doctor to carry out medical procedures, as long as he or she has the consent of the patient. Similarly, it is not necessary to be a registered lawyer – or have any form of qualification – to dispense legal advice.