Everyone can build a tower which stands. Only engineer can build a tower which barely stays.

I had a time, when i had frequent internet disconnections, and connection speed was slow in general, so while i had the internet connection, i just downloaded a bunch of videos, to then watch offline. Suprisingly, downloading video even with slow internet is faster than streaming it, despite when streaming it, videos was always buffering. Now i have stable internet and i can just stream videos without the problem, even by using third party app with no ads and without account.