Skip to main content

Airlines and Software

This might be a little off topic, but after reading this article from USA Today, I thought the software industry should be inspired by the airline security system.



As far as I know, the reason why air flight is the safest way of traveling is much due to these aspects.

One, all the parts involved work toward ZERO fatalities.

Two, their effort is never "good enough".

Three, they have a very open mind, sharing all the information about problems and crashes (the system was born when planes were "constantly" crashing so the pilots were very interested in sharing their experiences !)

Four, unfortunately aircafts can't really pull over to change a flat tyre or stop to check their engine along the road !
Airplane manufacturers are therefore forced to build better, safer airplanes with improved safety and performance. Maintenance technicians are also forced to improve procedures to enhance reliability and safety and I think that regulators contribute with controlled procedures and checklists to avoid omissions or carelessness, and accident investigators generate a fair and exhaustive analysis of the accidents.

There are also other factors, but they are valid for any other transportation systems: pilots improve their skills, there are better weather forecasts, customers "forced" the industry to adopt new technologies, training methods and to improve human performance, etc.

I guess that software makers (including myself) should think about this !

Comments

Popular posts from this blog

Vague requirements

An old school tip on vague requirements. A lot of words and sentences that we write in our requirements documents are often too vague . And these kind of unclear requirements have a big chance to cause problems at the end of your work. Blurred Something like: the system must be scalable , the system must be user friendly , the system must be quick . A good way to at least improve these three requirements could be something like this: 1. The system must be scalable up to 1.000 concurrent users without upgrading our servers, 2. The system must be usable by an average 50 years old accountant that only knows Word and some Excel, 3. The system must have any functinality ready on the screen  in 1" when all concurrent users are using the system. So, by just exploring a bit more with the stakeholders, you can reduce ambiguity a lot. It's not too difficult and you can have a huge improvement in the end product or service.

"Volere" Requirements process

I found in my library the "Mastering the Requirements Process" book , that some might know as the " Volere " book. After many years I still find it very useful. I don't think the good Robertsons invented anything really new, but I do believe that this book covers 90% of the "how to" solve requirements problems in software development.  And 90% is a lot ! The parts I appreciated more, this last time are: Chapter 12. Prototyping the Requirements  Working together to the prototype, can really take out the users' implicit knowledge, correct lapses and help in many other ways. Chapter 11. The Quality Gateway You could try put an analyst that doesn't work on the same project, to read the project's requirements and have him refuse: all incomplete or inconsistent entries, frills, etc. I think it can be a very powerful practice.

1. What is a Requirement ?

The word Requirement comes from the latin word Requisitum , that comes from requirĕre  «to demand, to require, to call for» and quaerĕre  «to ask, to strive for, to require». Never forget that asking a lot of questions is one of the key in understaning the real needs of your customers.