The singular of data in Latin is datum, but in English it’s data. It is a mass noun where it’s not easy to break it into individual, countable pieces. Something like sand is almost never represented in ite plural form of sands.
The singular of data in Latin is datum, but in English it’s data. It is a mass noun where it’s not easy to break it into individual, countable pieces. Something like sand is almost never represented in ite plural form of sands.
That’s not a particularly compelling argument. There’s a smallest unit of sand, too, but we still use a mass noun for it.
Besides, dictionary researchers agree it’s both a mass noun and a plural noun. People use it both ways. Here’s what Merriam Webster says about it. (I’m going to rework it to reduce the wordiness because it was so dense!)
So OP’s post is only half right, if even that much. In common speech, data is a mass noun, but many scientists and publishers still treat it as a plural noun. I would even venture most do.
Working as a programmer, most people I’ve interacted with use it as a mass noun, but not all. Language evolves, and the mass noun version is just as acceptable in most circles, but it certainly isn’t worthy of a “you should know” or “today I learned it’s actually a mass noun.”