Such an approach is considered to be increasingly unreliable and subject to significant variations depending upon the assumptions made.

By 2004, many M249s had been in service for almost twenty years and were becoming increasingly unreliable.

Due to their age, they were increasingly unreliable and expensive to maintain.

The man was proving increasingly unreliable, and even worse, unpredictable.

They began to see him as an increasingly unreliable tyrant - which to some extent was true.

In the last few years, he noted, many of his client buildings found this source to be increasingly unreliable.

And then, of course, there was the issue of the participants' increasingly unreliable memories.

The undersea cable became increasingly unreliable over the decades and was replaced in May 2005.

Competition was not the only problem the company faced, as its suppliers and agents became increasingly unreliable.

Guardian folded, leaving them without a record label, and their tour van was growing increasingly unreliable.