An improvement the owner had not requested

Text A: an original contemporary practice extract.

I lent a friend my cookery book for the weekend. He returned it with neat pencil ticks beside the recipes he recommended and crossed-out quantities where he used less sugar. He expected me to appreciate the practical notes. I preferred the unmarked pages because I used the book when testing recipes for the first time.

He offered to erase the marks and gave me his notes on a separate sheet instead. I thanked him for wanting to help and explained how I used the book. The next time he borrowed it, he asked before adding anything. His suggestions still had a place; it did not have to be permanently beside the printed instructions in my copy.

Text B: an original contemporary practice extract.

My neighbour borrowed a guitar for a recording and returned it tuned differently. He said the arrangement made the chords for his song easier. I picked it up expecting the familiar tuning and could not play the piece I had been practising in the usual way. He had improved it for his task without checking what would happen to mine.

He retuned it and wrote down the arrangement he had used in case I wanted to try it later. We agreed that a borrowed instrument should come back in the agreed condition unless a change had been discussed. I remained interested in his recording. That interest did not mean I wanted every useful choice he made for it left in place when the guitar became mine to use again.

Both texts describe the responses to the changes made to the borrowed things.

What similarities do the responses to the changes made to the borrowed things share in these extracts? Use evidence from both texts to support your answer.