Meditation is the meta-cognitive training of attention. Training attention develops a control over the patterns of thought that are triggered, and thereby change the mental habits that govern your operation. Whilst meta-cognitive properties such as reflection is often used to improve more standard learning outcomes, here we use meta-cognitive training to train our meta-cognition itself. Hence, measuring the learning outcomes can be incredibly difficult. --- TODO * Talk about EEG, fMRI... studies * Link in with eastern philosophy * Talk about edtech apps that aim to teach meditation * Are there any other examples of the training attention? we require attention, and learn it by proxy of other tasks?