Originally Posted by
SkiAdcock
1. So what if you get likes on both contradictory posts? How is someone supposed to determine which of the 2 is correct?

I can think of reasons for like, but trying to determine which is correct isn't amongst them.
Whichever has the most likes.
Originally Posted by
SkiAdcock
2. I'm a bit confused on how +1 doesn't also provide positive feedback.

It does, but I rarely do it because it clutters threads.
Originally Posted by
SkiAdcock
And I really don't get how +1s 'clutter' a thread. I actually find the post screenshots above w/ Likes & names listed under a post more distracting/taking up real estate than simple scrolling quickly down a thread w/ some +1s.
Empirically all the likes (which I've seen range into the hundreds on "post of the year" quality posts) take up 1/2 inch of vertical space max.
OTOH,
each individual +1 takes up a minimum of 1.5 inches of vertical space.
(And 1.5 inches is without quoting, which can lead to confusion with intervening posts. If the full quote is quoted, it can take more than 1.5 inches. Or a [snip] quote can be created keeping it at 1.5 inches, but that takes even more time on the part of the +1'er, providing even more disincentive.)
The bottom line for me is that the positive feedback via a like mechanism is:
- Easier to do than +1, thus likely to be utilized more often (good for positive feedback)
- Empirically takes far less space, thus creates less clutter (good for readability)
- Is more likely to be used because it doesn't create clutter (good for positive feedback)
- More positive feedback results in more quality content