Here’s a collection of annoying and sometime hazardous events that can happen in our digital world. Digital dependency is growing at an ever-increasing rate. There’s no way we can put our head in the sand and pretend it’s not happening. Yet, I’d say we are ill-prepared for the stuff that can go wrong. Well, anyone over the age of 25 years can be ill-prepared. Maybe the younger ones are ill-prepared too because of the immense trust they place in digital systems.
Last night, the wonderful “smart” TV that sits in our living room behaved in a way that is designed to get anyone’s back-up. Ironically that’s the function that is often missing – back-up.
Do I blame my clever Sony digital TV or the App that’s running on the TV? The many Apps. Anyway, the TV guide displayed but every time a selection was made the TV screen went blank. Me being used to troubleshooting, I tried another App. All worked fine. So, only one App was misbehaving. Ony one App was not doing what it should do.
To most people this would be a shout out to say; my TV is broken. How can it be broken it’s nearly new? It’s not performing its most basic function. To me, my deduction was that the App that provides the digital stream of the live broadcast channels was doing some kind of update but, unhelpfully, not telling anyone about it. The dumb thing is that the screen went blank. No information. Why the developers of this App couldn’t have thought ahead and put up the screen words saying – please wait – I have no idea. Perhaps they like to see our blood boil.
By the way, the above event happened just at the end of a world cup football game last evening.
Believe it or not, this irritating blank screen case has occurred in flight on an in-service aircraft. The main displays in the aircraft cockpit blanked. For those who may not be familiar, the main critical flight information is displayed to pilots on electronic screens in a modern aircraft cockpit. So, when everything goes blank it’s not a nice situation. Because safety is the primary concern there are independent standby instruments. They are only basic and aimed at managing the situation.
The case that I’m writing about above was because of a notorious software error. One that’s by no means new. Most serious and well-trained developers will know the case.
Do a little maths. Have you ever taken any number and divided it by zero? For fun, I picked up a desk calculator, yes, they still exist and did this simple sum. The makers, Casio have that one figured out. A small E comes up on the corner of the screen. E for error. Trapping this potential error is elementary best practice. For flight safety related systems, it’s vital.
What’s my message? It’s to understand what it means for something to be broken.
A vast swath of the population continues to have a, learned from experience, idea of what broken means. It’s basically an analogue notion. If I get a puncture in the wheel of my car’s tyre it’s visible, it’s understandable and it’s fixable. It’s a physical phenomenon.
If my super-duper mobile phone does something strange and unexpected, it might be visible, understandable and fixable but it might not be. In essence I have few ways of knowing. I hesitate to introduce the subject of Wi-Fi connected computer printers to this short article, but I will. Some of the most frustrating, unhelpful and mysterious software has been developed for this equipment. Annoying to a level that is difficult to match anywhere on Earth.
John Vincent 