In the article at Chessbase, Not quite unprecedented, by Carlos Alberto Colodro, much was made of the fact that current World Chess Champ Magnus Carlsen lost two consecutive games in rounds four and five in the 2023 Tata Steel Chess tournament.
“Before the rest day at the Tata Steel Masters, Carlsen had lost to Anish Giri, and in the very next round, he was shockingly defeated by 18-year-old Nodirbek Abdusattorov. The last time Carlsen had lost two classical games in a row was in 2015, at the Norway Chess event, where he lost to Veselin Topalov and Fabiano Caruana in the first two rounds of the super-tournament.” (https://en.chessbase.com/post/tata-steel-chess-2023-r5-b)
There is a box in the article which contains the number of Carlsen losses since 2013:
Amount of losses in classical chess for Carlsen by year:
— Tarjei J. Svensen (@TarjeiJS) January 19, 2023
Anyone who knows anything about statistics knows that without context numbers are meaningless.
For example, the two games Magnus lost during the pandemic year could be more, percentage wise, than the ten lost in 2015. Without knowing how many games were contested by Magnus for the above years the numbers are meaningless.
Things would have been different if the writer had, for example, taken time to research his subject. The author also could have researched how often the other World Chess Champions had lost two consecutive games, which would have added something interesting to the article.
The article did stoke my curiosity, causing me to wonder why Magnus played such poor Chess moves. I researched the earlier tournament in order to learn the dates of the two games that were lost back in 2015. Then I went to the preferred biorhythm calculator (https://www.biorhythm-calculator.net/) to check what it displayed for Magnus at the beginning of the 2015 Norway Chess event:
Magnus finished the tournament one-half point out of last place in the event, winning two, drawing three, and losing four games. The above chart shows Magnus intellectually low for the entire tournament.
Contrast the above chart with the one below: