There can be little doubt that inequity created by normal healthy capitalist economies, is the primary the cause of this phenomenon. Health economist and biostatistician Andreas J. W. Goldschmidt searched for patterns and proposed that there is a phase shift and overlap of the so-called Kondratiev cycles of IT and health (shown in the figure). He argued that historical growth phases in combination with key technologies does not necessarily imply the existence of regular cycles in general. Goldschmidt is of the opinion that different fundamental innovations and their economic stimuli do not exclude each other, they mostly vary in length, and their benefit is not applicable to all participants in a "market." 
During its supported lifetime, software is sometimes subjected to service releases, patches or service packs , sometimes also called "interim releases". For example, Microsoft released three major service packs for the 32-bit editions of Windows XP and two service packs for the 64-bit editions. Such service releases contain a collection of updates, fixes, and enhancements, delivered in the form of a single installable package. They may also implement new features. Some software is released with the expectation of regular support. Classes of software that generally involve protracted support as the norm include anti-virus suites and massively multiplayer online games . A good example of a game that utilizes this process is Minecraft , an indie game developed by Mojang , which features regular "updates" featuring new content and bug fixes.
Hi Mark, I know what you mean, it all seems to take a little thinking about at our age, what with nearing retirement age and other commitments. For me, I have done everything I have ever wanted to in my life and this one last thing I have put off until the kids could fend for themselves if the worst was to happen to me. And so I’m still on course and everything is going as planned. I suppose in one way, a job isn’t an issue for me as I am a builder and can do pretty much anything, so getting a truck and a few adverts out on my return and I’m back in business. If I return that is :). I have been working on this and wanting this for so long, that I don’t care if I’m away for 10 years if need be. I didn’t know you were in Myanmar, I bet is is amazingly different living and working there. Who knows, Brexit may open up some new opportunities. I did consider Japan, but it was just such a distance to go up before coming back down again :). I haven’t rule out the Philippines though. A couple of years ago I was in Manila, Boracay, and Puerto Princessa, and I loved it. But first things first, I need to start cycling :). I wish you all the success with your own plans Mark, keep me up to speed and I will do the same. Steve