This is probably different for different people. People experience creative activities in different ways. Programming, maths and computer games all feel about

This is probably different for different people. People experience creative activities in different ways. Programming, maths and computer games all feel about the same for me. Painting, prose or music are not the same activity in any sense. Might be worth noting that I scored poorly on language testing and highly in mathematics during education as some external validation that they aren't the same thing for me. The author has generalised their experience to that of all people, possibly for dramatic effect.