At the airport after a tiring business trip a lady's return flight was delayed. She went to the airport shop, bought a book, a coffee and a small packet containing five gingernut biscuits. The airport was crowded and she found a seat in the lounge, next to a stranger. After a few minutes' reading she became absorbed in her book. She took a biscuit from the packet and began to drink her coffee. To her great surprise, the stranger in the next seat calmly took one of the biscuits and ate it. Stunned, she couldn't bring herself to say anything, nor even to look at the stranger. Nervously she continued reading.
After a few minutes she slowly picked up and ate the third biscuit. Incredibly, the stranger took the fourth gingernut and ate it, then to the woman's amazement, he picked up the packet and offered her the last biscuit. This being too much to tolerate, the lady angrily picked up her belongings, gave the stranger an indignant scowl and marched off to the boarding gate, where her flight was now ready.
Flustered and enraged, she reached inside her bag for her boarding ticket, and found her unopened packet of gingernuts...
Analogy : making assumptions, think before you act, different perspectives