For the longest time I was under the impression that everybody has unlimited potential, that you can essentially take a homeless junkie of the streets send them through college, give then a job and have a functioning intelligent person come out at the end. That is absolutely not true. based on my own experience we all have limits and glass ceilings. Yes, we all live on the same clock, but some of us have to deal with so much behind the scenes just to stay afloat while others can breeze through life like its nothing. There are people who are incredibly academically gifted but absolutely inept in personal or household stuff, some people are thick as a rock but incredibly charming, etc. We all have our strengths and weaknesses but sometimes of course all the marbles roll into the right holes and you get somebody who’s good at everything they touch and are almost doomed to success.
There are just things that I will never able to grasp, or habits that I will never able to form because I tried my whole life and it never worked out. I consider myself as a fairly baseline dude, so its safe to say that if I have these experiences the majority of people will have them as well.
I thought Brussels sprouts were baby cabbages until I was 28 and I finally saw them still attached to the stalk.
If it makes you feel any better, you were actually almost right. These days the brassica oleracea has several well-known cultivars, including Brussels sprouts, cabbage, cauliflower, broccoli, kale and kohlrabi, all of which come from the same species of plant.
Also, relevant xkcd.