You made the pick up, and cut some time from your run! You moved quickly and arrived at the delivery location in half the time. Next, you walked up 5 flights of stairs, carrying the contents of your delivery! Next, transfer the delivery to the customer, and your work is done. On to the next. With, no, tip. It happens, sometimes often. Other times, a simple pick up and drop off, nets a huge tip!
What is the mechanism that determines the good tip and the no tip scenarios? Random and unpredictable are the good tips. Random and unpredictable are the no tips. Tipping is optional, after all, which makes it almost impossible to know if it will occur. The nature of tipping changed, as gig-work became more mainstream. Tip amounts are known before any service is provided in most scenarios. Successful tours are better evaluated on the whole, rather than good tip, no tip mentality. A good tip.