You could have 5 floors, and it still wouldn’t be enough. You could have 30 floors and it wouldn’t be enough.

I don’t think you understand the scale of farming to human. Even if you’re entirely vegetarian it’s on the order of 0.5-1 acre per person to grow the required food. That’s 20,000-40,000 square feet. Even if hydroponics were involved and cut that by a factor of 10, you’d still be at 2000 square feet per person. A typical grocery store is 25-50,000 square feet, so let’s go with the most generous and say 5 floors of 50,000 square feet you could produce enough food for… 125 people.

The math doesn’t math. No reasonable amount of food growth is ever going to be possible inside a city.

It’s a nice utopian idea, but it just doesn’t do anything. The aquaponics and greenhouse are just a bad utilization of such prime real estate space, the amount of food produced would be so low as to be a rounding error for the food they would still need to import and you could use that same floor space to house hundreds of more people.

Go look at my comment from a few minutes ago showing the production math for 5 stories of hydroponics.

We’re talking about 2 different things. I have zero interest in debunking all your strawmans and assumptions about a completely different concept.

I just replied to your other comment, but even a local network can’t feed a city. Let’s do some more math.

Los Angeles has about 18 million people, and on average they take about 2 acres of land to feed (it can be less for vegetarians, but lets assume they are just normal people here)

That’s 36 million acres needed, which is about 56,000 square miles, which is an area of 280 miles by 200 miles of nothing but farmland.

You quite literally can’t even feed Los Angles with a 100 mile diet, even if it was surrounded by nothing but farms (which it isn’t)

In fact, California only has about 25 million acres of farmland in total (8 million irrigated, and the rest for animal grazing)

Source local food sounds good, but we import food for a reason. Cities require a ridiculous amount of farm land to feed.

Your article says it’s 40:1 instead of the 10:1 I assumed, but that’s still far too little to matter.

Your two floors of farming would still feed less than a hundred people full time, even if they hit those lofty idea targets.

You’re the one inserting the assumption that this has to become the only source of food for people.

I said:

or source through a local network.

If you can’t read those words and comprehend them than why would I consider anything you have to say?

What the fuck does local mean? I just showed you the math that even Los Angeles alone consumes more food than you can possibly grow in California.

You’re the one fucking around with “I want a greenhouse above my grocery store” with no real proof that it would matter or be a good use of space.

What you said:

typical grocery store

What I said:

IMO every city should have public cafeterias

We’re not talking about the same thing. You’re arguing with yourself.

What you said:

typical grocery store

What I said:

IMO every city should have public cafeterias

We’re not talking about the same thing. You’re arguing with yourself.

I’ve never been to a cafeteria with a bigger footprint than the average grocery store.

@Sunshine@piefed.ca

What you propose has existed for decades. See the link:

https://www.fns.usda.gov/summer/sitefinder

Our local school opened up one of these programs during the pandemic. It’s a blessing but it only is for kids and only lasts 8 weeks during the summer

@TORFdot0@lemmy.world

The school cafeterias could remain open 24/7 for everyone. Sure, taxes would go up about 50% or so, but free sloppy joes would be well worth it, amirite?

Ever heard of a co-op? They usually deal directly with the providers. No middlemen.

What we need are co-ops. Unfortunately it’s hard to run one of those. They tend to not make so much money.

It’s tough. Co-ops I’ve checked out are all about organic, which is cool but they’re more expensive. I’ve looked at farm stands and Saturday markets but they’re are more expensive too.

Honestly where I live, farmers markets are often the same price, sometimes a bit more and actually sometimes a bit less than a lot of grocery stores. All our groceries have to be shipped on a boat so it actually often is cheaper to grow and buy local.

Either way I prefer to give my money to the “yuppies” than to fuckhead billionaires like Galen Weston and Jim Pattison. I acknowledge that’s a privelege but I also won’t shit on people who make the same choice or who can’t afford to make that choice. The problem is not any of us, it’s the price-fixing ballsacks.

Replace grocery store with cafeteria, do you have an actual argument or are you just nitpicking?

Only available for children in the summer… I don’t think this isn’t the solution being proposed.

You seem to be assuming that this idea would have to solve all food consumed by everyone. No one is making that assumption except for you.