We've all been doing ketchup wrong
In McDonald's, they dole out tomato sauce differently. No longer do you get a sealed tub, but rather, you serve yourself from a dispenser into a little paper cup.
So far, so obvious. However, it turns out we've all been doing it wrong. If you're just sticking sauce into a cup, then you're missing out on a world of slightly more ketchup.
Turns out that they're built to be fanned out, allowing you a greater dunking surface area. Watch.
Now you can dunk your burger as well as your fries! This is magnificent news for all concerned. Of course, there will be people who already knew this and kept it to themselves like dreadful arses, but now the information is out there for all of us!
This is a human progression up their with penicillin and the combustion engine.