The original buildings, constructed from dung and straw, tended to collapse whenever hit by one of the country's frequent earth tremors.
After a short interval, another pair appeared, and constructed a habitation, chiefly with materials purloined from the other nests.
The correspondence, running for months, shows the determination of Cable to distance himself, and the Liberal Democrats, from a target that he regards as wrong, badly constructed and unachievable.
Each prominent character has been given meaty storylines to gorge on, and while some haven't panned out quite as well as others (Jimmy's sideline as a sex worker was introduced and wisely dropped, as was an ill-advised plot-strand about drug-induced rape), the web of intrigue that's been constructed so far doesn't have any major weaknesses in it at all.
"Our biology wasn't constructed to keep people together for that long.
The vast surveillance-industrial state that has grown up since 2001 could not have been constructed without government contractors and the data-mining industry.
"It stands up because it is so brilliantly constructed," Holland says.
There were the dancefloors constructed beneath the sands of the Black Sea.
In imitation of Tsar Peter the Great, who constructed St Petersburg in a swampy wilderness to act as a window to Europe, Putin showcased his modernizing credentials with an Olympic complex on a swampy coast and a brand new skiing resort in the mountains.
Emergency services were still attempting to free the last of the trapped passengers four hours after the incident, using a specially constructed platform to reach the carriage.
And while Unfriended might not reach the giddy fright heights it aims for (there's a bit too much minimising and maximising windows to fully terrify), it's a smartly constructed set of tricks.
