[nilved]

A mobile network is basically sub-Saharan. 120 KB of JavaScript is far too much to download, decompress and evaluate on a phone.

[onion2k]

My Nexus4 has a faster internet connection and more RAM than my parent's laptop, and it's almost a 3 year old phone. Most (75%+) smartphone users in the UK have devices that can easily cope with a 120kb javascript library. Your rule is wrong for western countries.

[judofyr]

As someone who frequently travels on the tube: The rule persists.

[rimantas]

And many western users have a limited amount of data on their plans.