Given the background description of some cooking related query, summarize the question into a title

[EX Q]: When I read food safety guidelines, I always get the sense that I should run for the decon shower if I even look at a piece of raw meat. I have to fight the urge to sprint home with my groceries lest the eggs become poisonous on the way. If I thaw meat from the freezer, I worry that one misstep will kill me.But rationally, I know none of that is true. Aside from the fact that I've been cooking for myself for decades, and I'm still here, we simply wouldn't be here as a species if it were that hard to cook safely. And then there's this thread from a couple of years ago, which seems to say that there's a fair amount of subjectivity in food safety procedures. (But this thread takes a stricter line.)So: how much difference is there between official food safety doctrine and actual danger? Are there rules that are just oversimplifications in order to minimize human error? UpdateThis is not a duplicate of this question. More specifically, the question is similar, but the accepted answer on the other thread doesn't actually address the question of fault tolerance.
[EX A]: How much "buffer" or margin of error is in food safety guidelines?

[EX Q]: I am going camping shortly. I have done some dutch oven cooking before, and there is one recipe that I want to make that uses one. However, I do not have a dutch oven...I am thinking of using two aluminum pans (the cheap foil ones) and aluminum on the top (several layers) to make a sort of dutch oven alternative.Has anyone tried that? Does it work?I am also thinking of putting some sand or water between the two pans to make it hold and transfer the heat a little more evenly. Anyone know if this will work?
[EX A]: Dutch Oven alternative for campfire?

[EX Q]: So I was making a corn-syrup-free pecan pie, and it called for a procedure that I've never seen before. To combine the liquids (milk, eggs, vanilla) with the solids (dark brown sugar, butter, flour) it called for combining the solids over medium heat, cooking it until the sugar was completely melted, and then combining with the liquids.Now, my candy experience starts and stops at "things containing chocolate", but I can melt sugar. However with the addition of butter and flour I was worried about it burning, and I didn't render it all the way down to full on molten sugar. It was quite melted but it poured more like a thin batter than like liquid sugar.Combined the liquid(y) sugar with the liquids, and exactly what I thought would happen, happened: the sugar immediately solidified into chunks, and wouldn't incorporate. Rescued it by heating the whole thing, and stirring until it incorporated. This worked, but I think it sent the texture off a bit.My question is: is this even feasible? Can you really melt sugar to a thin liquid, and then seamlessly incorporate it with a cold liquid? And wouldn't the addition of flour cause issues with cooking the sugar? I pretty much expected it not to work, so it may just have been a failure of will on my part.
[EX A]:
Combining hot melted sugar with cold liquid ingredients