How do the stories of Karnik and Appasaheb in Chapter 33 contrast the human tendency to make and keep promises?

Chapter 33 presents a fascinating contrast between two devotees. Karnik, when prompted by Narsing Maharaj, immediately acted on the impulse and joyfully gave a Rupee, feeling it was Sai himself accepting it. In contrast, Appasaheb's story illustrates the common human failing of being 'devoted to verbal promises' but hesitating at the 'time of giving.' Appasaheb had boasted he would give ten Rupees, but when a Fakir appeared, he grew suspicious and did not offer the six Rupees he had on hand. This juxtaposition highlights the difference between a spontaneous, faith-filled action and a promise hindered by doubt and 'counter-resolves' of the mind.