

I did that experiment with my flatmates for some weeks once. (I love them, but they had it coming.)
One had a tighter schedule and you actually noticed the change pretty fast. I ended up telling him pretty early.
The other one didn’t notice at all, so I just went on and on. He was mad at me when I told him. Told me I should’ve just kept going if it’s working.
Both couldn’t tell from the taste alone.
10 years ago, a Black woman told me that, while it’s perfectly valid to disagree with other people’s opinions, I should rethink the level of confidence that I depict when discussing a topic that I don’t know all that much about.
She probably saved quite a few others and myself from a fair bit of trouble.