In HVAC, I've been called out to look at the air con in an office block and person A is cold but person B right next to them is hot, there's nothing we can do to help that.

One simple solution that seems to work each and every time is the placebo effect. I say ok, give me an hour, I'll adjust the parameters and check over the system operation. I then sit in the plant room for an hour paying on my phone, come back to see if it's better and 9 times out of 10 they're both suddenly happy.

Oil and gas workers are normal people with children and dogs that care about the environment and they do a pretty good job on average of protecting the it. But accidents do happen in the industry, and when they do, it's sometimes not a simple "cleanup on aisle six" scenario. I've seen grown men on their hands and knees mopping up drops of oil in a cow pasture more than once.