I understand there's a good reason (breathing, oxidation) for this. Still incredible that you can hardly purchase a bag of flour that doesn't leak in 2023.

Will humanity solve this important problem by 2030? Help me find out!

I will resolve (or delegate resolution) based on a survey of different (probably at least three) store brands of flour (wheat) in the U.S. (e.g. Publix, Trader Joe's, Whole Foods, Walmart, depending on where I am located then).

If on January 1, 2030 1/2 or more of those brands are still sold in leaky paper bags, resolves YES.

If then or earlier I notice that less than 1/2 of brands are sold in leaky paper bags, resolves NO. Leakproof paper, plastic, boxes, cans, etc. could all resolve NO.