I've been preparing this humongous post on this but decided in the end to postpone it and just put up a short and easy one instead. I wanted to for some time to voice my opinion regarding biomechanical modelling. And in particular the subject of complexity versus simplicity. Biological systems are frequently very complex, the details of which are often poorly understood. The musculoskeletal system is no exception. I shan't linger on how complex the musculoskeletal system is, but I will comment on the approaches in which we try and model this complexity, or approximate it. With the advent of affordable computers, it has become expected for biomechanicists to perform high-complexity analyses with many parameters. I'm all for development of sophisticated models and analyses. It helps identify elements of the musculoskeletal system that are otherwise difficult if not impossible to determine. But herein lies the problem; a lot of the complexity, be it the actual values of