Once, several years ago, when I was shaving my beard in our house at native place with a twin blade razor, halfway through, it became blunt. I don't have another razor to complete the task.
I can't gobout with oneside shave. Those days, home delivery apps were not there.
First time faced this problem. Though, we were taught redundancy and diversity in our training for nuclear facilities, and though, I had good experience working in safety field, I didn't apply these principles for the case of shaving, problems that may arise, as narrated above.
Fortunately, my brother was at home at that time. He got a new razor from nearby shop and completed unfinished task.
Subsequently, I started keeping more than two sets of razors in my travel bag.
This is the lesson learnt, i.e. having redundancy. And to be followed in all activities, home or work.
Another experience is w.r.t. start time to reach airport, as below.
Normally, I keep sufficient margin to be at airport and start early from home. My house is 40 km from airport and approach is through traffic areas. It takes about 45 minutes in early hours and 75-90 minutes during daytime. For security check in airport, it requires 10-30 minutes, as was my experience, both from crowd and security personnel scrutiny of baggage. Another 5-10 minutes to reach boarding gate depending on its location for the flight.
Once, my boarding time was 0815 hr. My taxi is supposed to pickup me at 0530 hr. The driver didn't come even at 0545 hr. When I tried to call, he didn't pickup initially snd later he informed that he will reach my house in five minutes. But, he didn't come. It was raining at that time. Later, I came to know that he slept and didn't start in time. When I called at 0545 hr, though he was at his home, he bluffed saying he is nearer to my house giving false hope.
I booked a taxi online, time to pickup showed 0610 hr but reached only at 0620 hr, and we started. Due to rains, roads are flooded, making it slow to wade through. Then, on a narrow flyover enroute,we got stuck with traffic jam from a state transport bus. Finally reached airport at 0815 hr, completed security check in five minutes and reached boarding gate by 0830 hr by running. Boarding for the plane just started, with some delay. I was saved by fast security check, boarding gate position nearby and delayed boarding from airlines.
Later, I gave complaint on our taxi driver to our department transport section and he was removed from contract.
Many think and plan their travel as if they go without problems. Possible delays from traffic jam, vehicle breakdown, and others are not considered by them.
It is my opinion that, it is better to wait at destination rather than sitting at home.