They can't drive a vehicle, cook a meal, or walk Fluffykins at the same time that they watch your video podcast, so you gain greater audience focus.

... but if E is Banach, then ...

According to Hsing yüan 姓苑, the surname Ch'i 蘄 derived from the place name Ch'i-ch'un 蘄春, located in the present Ch'i-chun hsien 蘄春縣, Hu-pei 湖北 province.

to run twenty laps