By situational tech cards, I mean cards that are often dead but can come up in certain situations.
So... TecH cards.
I was going to quote an old article by Obso133t (from a different Pokémon website, hence not simply linking to it) but even I thought it was too much. XP The
short version is that tech originated from TecH, which itself was short for "Technical Advantage". Odd capitalization is because of early 2000's internet culture. The more... erm... technical meaning is from an old math heavy project a player who's online handle was "Lurili" crafted. Basically, formulae to determine how much cards were really helping you...
...but there was a hiccup. Usually, you wanted
reliability. This meant running a single or double copy of something was almost never worth it, according to the formulae. In practice,
however, frequently a single or double of something could help you "win more" against problematic match-ups and situations than it would cost you by being a dead card in more typical games. So, for example:
In my Granbull (LOT) deck, I've been running one Oranguru (UPR) for matches where I desperately need more recycling but
mostly for when I encounter stall decks.
I kin haz stall 2! =^w^=