Not really. Most people are not computing primes on their phones, they are surfing Facebook and Instagram. Since it’s a pointless activity there isn’t the conce

Not really. Most people are not computing primes on their phones, they are surfing Facebook and Instagram. Since it’s a pointless activity there isn’t the concept of “completing a task” — they will just think “I Facebooked for three hours instead of 2” instead of “I got to see 500 photos in 2 hours rather than 400 photos in 3 hours.”