The Challenges with Thinking

This chapter examines how cognitive biases shape the way students think, make decisions, and approach their learning. Using Daniel Kahneman’s framework of System 1 and System 2 thinking, it explores how fast, intuitive judgements can lead to errors and why more deliberate, effortful reasoning is often necessary for sound decision-making. Through practical strategies and relatable scenarios, this chapter helps students recognise flawed thinking, develop stronger mental models, and build habits of reflective thought. It also addresses common misconceptions about probability, randomness, and data—areas that frequently influence poor choices. Two influential ideas from behavioural science are introduced: nudge theory, which highlights how subtle changes in environment can guide better learning decisions, and the concept of noise, which refers to random inconsistencies in judgement and study habits. By understanding the effects of both bias and noise, this chapter empowers learners to make more informed, consistent, and intentional choices in their education.