The outcome of reading with a pen in the hand is not possible to anticipate, either, and here, too, the idea is not to copy, but to have a meaningful dialogue with the texts we read.
more than putting stuff into your own words. think about the ideas you read. what questions come to mind. if you answer it later, you're doing the work. if not, you're still doing the work if it leads to searching for an answer some time in the future.