Years of experience, being a good listener, practical application, methodical, analytical, abstract and genetically prone to brilliance.
With a variety of tools, systems and widely-used applications with considered approach, applied learning and inherent pragmatism.
Lukewarm tea, accidentally hitting the teaspoon on the side of the bin when disposing of a teabag, milk in the mug at the same time as the teabag, split teabags and tea brewed for less than 6 minutes.