So, in the summer I graduated from a masters degree in Engineering Science. I studied at Oxford in the UK so it was four straight years of just maths, without the distraction of minors as I understand you have in the States, and I specialised in informatics and in particular in statistics and machine learning. Since graduating, however, I've just been traveling around Europe and next month I will be starting an internship in web development, and there are lots of other things I would like to do that are not related to my degree and don't involve maths - doing more traveling, working as a software engineer, maybe getting involved in a start-up. Buut I am interested in the subjects I was studying in my masters and I know I would like to ultimately end up in a job that involved the use of maths. I already turned down an offer for a PhD in computer vision but perhaps in a couple of years I would like to do that, or perhaps get involved in a company or development team that is working with machine learning and stats. So my concern is that I will lose my ability in maths...my dad would never stop telling me that maths is a skill that must be practiced. So if I don't practice any maths for a couple of years do you think I could lose my ability? I don't simply mean just forget practical stuff like the rules of integration, but really lose that mentality, the sort of structure of your mind that enables you to think through problems and really understand it? Or would it all come back to me if I spent a few weeks studying maths again? Also, perhaps more pertinently, do you think employers or academic institutions would take my maths ability seriously if I had not used it for a few years? Thanks for your thoughts.