Kerri's book Pick of the Week is 'Ignorance: How it Drives Science' by Stuart Firestein.
From The Guardian review:
Stuart Firestein, a teacher and neuroscientist, has written a splendid and admirably short book about the pleasure of finding things out using the scientific method. He smartly outlines how science works in reality rather than in stereotype. His MacGuffin - the plot device to explore what science is - is ignorance, on which he runs a course at Columbia University in New York. Although the word "science" is derived from the Latin scire (to know), this misrepresents why it is the foundation and deliverer of civilisation. Science is to not know but have a method to find out. It is a way of knowing.