"Lies are often much more plausible, more appealing to reason than reality, since the liar has the great advantage of knowing beforehand what the audience wishes or expects to hear." — Hannah Arendt
Multitasking, in short, is not only not thinking, it impairs your ability to think. Thinking means concentrating on one thing long enough to develop an idea about it.
The less time you spend thinking about or reading about or reacting to or writing about what anyone else is doing, the more time and positive energy you have to make your product the absolute best.