I've been trying to find something I once read that predicted that the next oil crash would be preceded by an unprecedented price drop before sky-rocketing, and destroying the oil-based economy that we currently live under.
Then there's the knowledge that certain oil producing economies have been deliberately over-reporting their in-ground reserves. Add to this the fact that, under international agreement, the amount of oil a country is allowed to pump out of the ground is proportional to the amount left in the ground - the more you have, or say you have, the more that you're allowed to pump out.
Add to this the principle in Economics that says that if there's a resource in the ground, it's best if you can dig (or pump) it up as quickly as you can...
Let's just say that, while pump prices are good for my wallet - I'm not optimistic that things will stay this way.
Fortunately, I think I've finished my major tree purchases - the only ones I'm now really after I think I can no longer get. I'll keep an eye out for those ones, there are a couple of gaps I could fill in the garden.... I now just have to look after the ones I have put into the ground.