As I wrote in a separate comment to someone who responded to me, there is a difference between: (a) thinking about, and deciding upon, what will be done, and

As I wrote in a separate comment to someone who responded to me, there is a difference between: (a) thinking about, and deciding upon, what will be done, and (b) the thinking that is required during implementation. {type (a)} was always the majority of my time, but {type (b)} consumed a lot of effort, especially for languages or syntaxes I wasn't very familiar with. {type (b)} consumes very little of my time now.