Is Mindfulness the Opposite of Multitasking? I realized that my use of social media always involves doing something else, and if I am on the internet I might also be on social media. Thus, I am always multitasking seemingly. 

How does the mind process multitasking? Is it possible to be mindful of each task (e.g. social media and writing a text) one after the other, or is such a thing impossible?

EDIT: By one after the other I mean for a short amount of time, going back and forth between the tasks.
Mindfulness(Sati) and one-pointedness(Samadhi) are 2 different things. Technically speaking, the mind cannot take multiple objects at once. So there is no such thing as multitasking with the mind. You feel like you are multitasking because the mind keeps switching so fast. So it is possible to be mindful while you are on so called 'multitasking'. 

On the other hand, in the realm of mindfulness, the internet does not exist! Social media does not exist! 'I' does not exist! There are only four types of mindfulness: mindfulness of the body, mindfulness of sensations, mindfulness of mental activities and mindfulness of phenomena. So be careful of what you consider as 'mindfulness'.