Reading with a dictionnary on the side isn't efficient at all. Like we said and know with the [Zeigarnik effect](Zeigarnik%20effect.md), we better have to write the word and come back to it later. Dictionnaries are helpful only to find an answer to a well formulated question: what's the meaning of this word? Yet, using an encyclopediae as an extrinsic aid is about searching for facts, opposed to opinion. Facts are non discutable truths. ## References - [202107062109 Don't use extrinsic aid synchronously](202107062109%20Don't%20use%20extrinsic%20aid%20synchronously.md) - [202106290039 Don't stop on unknown references when reading](202106290039%20Don't%20stop%20on%20unknown%20references%20when%20reading.md) --- *From: [How To Read A Book, The Classic Guide To Intelligent Reading - Mortimer J. Adler, Charles Van Doren](How%20To%20Read%20A%20Book,%20The%20Classic%20Guide%20To%20Intelligent%20Reading%20-%20Mortimer%20J.%20Adler,%20Charles%20Van%20Doren.md)*