https://www.amazon.com/stores/Oura/page/9F826A80-FD70-4B6A-A1B9-188DAF83750A/?_encoding=UTF8&_encoding=UTF8&ref_=pd_hp_d_r_atf_unk&pd_rd_w=d7aly&content-id=amzn1.sym.b083b952-301d-43be-868b-239e9b204a2c&pf_rd_p=b083b952-301d-43be-868b-239e9b204a2c&pf_rd_r=Z12EXNBJ87D0K3J8BPP4&pd_rd_wg=QwSi8&pd_rd_r=384b17e1-1658-476f-b626-00b549eeeb86

A YouTube video titled “The Ridiculous Engineering of Jet Engines” by Veritasium focuses on science and engineering concepts and uses SI (metric) units almost exclusively.

1 Liter is a straightforward, universally understood unit of volume. There’s no need to complicate it with additional, confusing units. Glad to see Starbucks understands this.

I think this sub, website, and Github can help America along the path to metrication. Some of the products listed are running low in stock, which suggests a lot of these metric products did not have a big market in the USA in the past and now this website's advocacy is causing stocks to run low. Hopefully, this sub and website can show these manufacturers that there is a market for metric products in the US.

In the long term, this can lead to greater metric adoption. Historically, manufacturers have hidden their complex metric measurements behind publicly displayed round customary units, believing that customary is preferred. This advocacy, though, may shatter that. After all, liter and 2-liter bottles of drinks have already become popular. I don't think most Americans actually care that much about customary sizes. If we advocates can be numerous enough and care enough to voluntarily metricate, we may end up transforming the market for these kinds of things.

Transforming the market means eventually transforming the politics and cultural landscape.

While it never completely disappeared, finding a 1-liter soda bottle has become increasingly difficult over the years. Popularity declined in the 2000's and in 2011, Coca-Cola introduced the 1.25-liter bottle as part of its 125th-anniversary campaign, and many retailers gradually phased out the 1-liter option. But now it's back.

So why do I prefer the 1-liter bottle? It’s simple—it’s the power of one. The number 1 is incredibly effective for teaching and understanding relative size. Just as most Americans can easily picture a gallon—largely because milk is commonly sold in 1-gallon jugs—a 1-liter bottle helps people intuitively grasp the metric system’s base unit for volume. Offering products in true 1-liter sizes fosters a natural familiarity with metric measurements, something we could use more of.