Every time you vis­it a web­site, a pro­cess of learn­ing is ini­ti­ated in the brain. Wheth­er it’s the nav­ig­a­tion, lay­out, or that auto-rotat­ing image slider on the homepage, your brain has to learn how to use the site while keep­ing track of the reas­on you came there in the first place. The men­tal effort required dur­ing this time is called cog­nit­ive load.

via the remark­able