One way of avoiding this is to examine the social, historical, cultural, political or economic context of the science or technology you are considering. The STS dimension should, at the very least, be visible in the research question you set yourself. The answer should be 'No'. You need to draw on at least one other discipline in order to justify the question. Your thesis should be readable and understandable by anyone, regardless of their academic background.
Most concepts are contestable.
Sometimes you might want to explore the different ways concepts are used in the literature. If you don't want to do that, at least explain how you are using the terms. Some students also black-box if not Europe, their own national or disciplinary perspectives. The first is particularly acute for students staying in their own country. One of the benefits of participating in ESST is an increased awareness of the simultaneously shared and different European heritages.