At University, so very long ago, we learned about the PTC taste test. We all took test papers home and charted our families’ ability or inability to taste the bitter chemical, which is apparently not found in nature, though the story circulating at the time was that it was derived from horse piss.
PTC stands for phenylthiocarbamide. Also known as phenylthiourea, the chemical structure of PTC resembles toxic alkaloids found in some poisonous plants. The ability to taste it would be an evolutionary advantage. Roughly 25% of the population cannot taste it.
Informally, amongst ourselves, we also discovered there was a small proportion of people who actually liked the taste. Most of us didn’t. I was reminded of this many years later when my younger daughter developed pica, and was prescribed a nasty tasting iron solution to be dispensed only a drop at a time due to its toxicity. I was expecting to have trouble getting her to take it. To me, it tasted Nasty. Very Nasty. On the contrary, she begged for more.
What I am leading up to, is that people are Different. And Different is not necessarily Wrong.
There is a huge difference between liking pineapple on pizza or being gay, and being a paedophilic cannibalistic serial killer. The line is crossed, to my mind, only when someone is harmed.
The problem is that too many people draw the line in ridiculously arbitrary ways. Religion and other erroneous beliefs, such as those held by believers of feng shui and by antivaxxers are only of importance when someone is harmed as a result of those beliefs.
Increasingly, the failure to accept ANY difference of opinion or of lifestyle is becoming a serious problem in society. The line is becoming so blurred that it is now my opinion that it should be firmly placed by law, at the place it should be; where beliefs and practices cause harm to others. Intolerance of racism, paedophilia and homicidal behaviour must be encouraged. Intolerance of sexual identity, the telling of Irish jokes, or belittling those with a fondness for pineapple on pizza should be considered as hate speech and acted upon accordingly.