Recent rapid technological and medical advance has more than ever before brought to the fore a spectrum of problems broadly categorized under the umbrella of 'ethics of human enhancement'. Some of the most contentious issues are typified well by the arguments put forward in a recent article on human cognitive enhancement authored by Garasic and Lavazza. Herein I analyse some of the assumptions made in their work and highlight important flaws. In particular I address the problems associated with the distinction between 'treatment' and 'enhancement', and 'natural' vs. 'non-natural' therapies.
Keywords: Enhancement; Natural; Non-natural; Treatment.