I'd never heard of Fortisip but from what I can tell it and ensure are both considerably more expensive than regular food, and actually more expensive than eating out.
Recommended daily calories are 2000 for adults.
One week of soylent is $65. 48 bottles of Ensure Plus is about $80. 6 bottles of Ensure Plus would be 2100 calories.
Looking at the nutritional info if I drank 6 bottles of Ensure Plus each day I would be ingesting 360% of the recommended amount of Manganese and only 60% of the recommended amount of sodium. The rest of the listed nutrients would be at about 150%.
I don't think Ensure Plus is a substitute good for Soylent. It's a supplement not a food replacement and it's formulated and priced as such.
Most nutrients with recommended amounts are healthy at higher than recommended amounts within fairly wide bounds, but the usually-listed recommended amount for Sodium is much higher than is minimally necessary, and is actually the upper limit recommended for about half the US population. So, actually, I'm not surprised that something intended as a broadly-usable food replacement would go over on most nutrients and under on Sodium.
http://www.cdc.gov/features/dssodium/
Nutrition isn't one-size-fits-all.
You are wrong.
(http://abbottnutrition.com/brands/products/ensure-plus-retai...)
> For interim sole-source nutrition.
edit: removed unnecessarily grumpy sentence.
> [about use of word "interim"] Doesn't exactly inspire confidence.
> [about safety of Soylent for sole use nutrition] I have no idea whether Soylent is actually safe as a permanent sole-source nutrition solution
This is an amazing sentence. It's fucking mind-boggling the amount of cognitive dissonance that the Soylent marketing guys have created. They deserve the funding for that alone. Like, God-Tier troll and God-Tier marketers.
Soylent is prepared food. It's a substitute for cheap restaurants like Taco Bell or Subway, not cooking rice and beans at home.