Stupid ****ing autocorrect...causal, not casual. I hate when it does that. Its algorithm is set to err on the side of "nobody could possibly know or use perfectly valid words that aren't regular every day words!" Try it yourselves. Start the phrase "Looking into causal factors..." and before you even reach the last word, after hitting spacebar it'll change it to "casual" on you, blink and you miss it. Start a sentence with "Causal", though, and it accepts it. So ****ing weird.