Hi, Mike.
I won't dispute that construction is a unique application of project management -- a factor that it shares with all the other applications. :-) But the following characteristic is pretty ubiquitous across all applications, in my experience:
"They forget to factor in all the hidden risk elements that have been sold with no value..."
Failure to do adequate risk assessment before commiting to a contract is perhaps the single strongest argument for humans NOT being the smartest animal. Beavers, for example, have evolved to make dam' (pun!) sure they leave enough time to get their projects done.
"...(P)rinciple of these is the risk of time over run."
Don't look now, but you're helping to make the case for using critical path drag and drag cost. ;-0 (BTW, did you know that Richard Attenborough recently photographed beavers in New Hampshire using little wooden abaci to do those calculations? Would a Bajan ever lie to you?) When is Asta going to decide to start including those computations in its CPM algorithm? My new book Managing Projects as Investments: Earned Value to Business Value is due out in September -- if there's a stampede for drag-calculating software, Asta is going to miss out.
And did you notice that I didn't say a word this past winter when Aus whitewashed England in the Ashes? (Truthfully, I was too annoyed -- and busy writing -- to talk about it!)
Fraternally in project management,
Steve the Bajan