.. Seems like, one of several plausible answers. o:
I am one of the worst "emotional" chess players around. I played in the Golden State Open last January. I took so many Byes, so i could watch the NFL playoffs :-) people were asking why i even entered???
Em, there could certainly be founded some parallels between the form of athletes, writers and any other professions in general. Possibly this shouldn´t be just a purely monotonous activity, and therefore to require some effort on the intellectual side of view. :-D I'm pretty sure that a lot of our human activities are also driven by mood and the way we feel. Perhaps almost no one wants to work on certain days, although at other times he/she would help others without any difficulties. Chess is the domain of people who have a good level of imagination, are challenging and have the potential to become good players for how they´re thinking, and as such, they can also be affected by that. :-)
This can't be casual. I've been working without proper rest for two weeks. Haven't took a weekend on that period, and I've been working more than 10 hours a day. I haven't sleep that well neither. The few last day I've been playing terribly. I work on my computer, doing stuff that sometimes requires to leave a code running for 20 minutes or more, and in that lapse sometimes I play chess to kill my anxiety. And this week, I've been doing it terribly, I've lost more than 100 points. This makes me realize that I do need to take some days of rest, because if I'm not focusing properly, that isn't good for my work neither.
Because they aren't machines?
For me, it depends on such variables as the amount and quality of sleep, the foods I’ve eaten, my level of engagement with matters outside of chess (you know, work), and what I am drinking—too much coffee, tea, or booze is bad. Not enough also harms performance.
Because they aren't machines?
Just came across this forum as I was googling for on building consistency in performance and play.
Made me think of that Rudolf Spielmann’s quote.
“Playing the endgame like a machine?”
Part of me wants to believe, it’s just a game, the other part of me wants to get it right, get better the next time 🕰️
Inconsistency is part of being human.
It would be like asking why Lebron James or Stephen Curry score 46 on the Spurs one night, and the next night score 12 against the hapless Lakers!