How the heck Live lines can predict?

I'm not sure if anyone realized but sometimes, if you check live lines, it can predict with a big chance who will win or not. For example, i was looking at this game yesterday UCLA v Washington , UCLA never got better line than +1.5.

Another example, Argentina VS CUBA. Cuba was +30.5 even though the game was like almost tie for the first half, it felt like 'wow free money bait'. Then somehow, Cuba started losing by 10 before half time in the last few mins. I actually bet +30.5 but as soon as i saw Cuba falling back off a bit and seeing how the bet lost value ,i cashed out at minimum loss. Then , in second half, CUBA got blown up , lost by 56 LOL. 

Another example, Kansas VS Connecticut were leading by 4 at half time but the second half line says Connecticut -4.5 or -5.5. Obviously, Kansas lost 2nd half and also FG. 

Try this one on   I’ve been watching for inflated 1h totals in ncaa bball( relative to the pregame l1h line) then I pound the under   Nailed 3 straight 1hs last night   U 80.5 Clemson u 81.5 Arkansas u 70.5 Montana    The spot to hit seem around the 8-12 min mark left in half   These kids have a hard time keeping pace as legs get tired in later 1h   

UConn was a pregame favorite so therefore that second half line was justified being down 4. UCLA was -1 1/2 all day long till -2 /1/2 pregame. UCLA won by 2. Not sure what you're getting at

You must be new to betting. Favorites especially large favorites start slow and the line will still be large because it’s so early in the game

I got UCLA +2.5 yesterday

Not new, i just never observed closely 'live lines' or half time plays. 

@ayashifx55

 I actually thought it was an algorithm they use, it would be too hard for a person to be doing it live

Yea , for sure its  algorithm. Its way too fast. I believe the linesmaker insert values manually and it just generates lines according to money movement etc. Also, during live play, it monitors every second and even tries to predict. I just don't know WHO inputs those scores lol. Probably they get info straight from those games? 

   for the thread i like live play ... good luck ...................... Posted by brickbets  Try this one on   I’ve been watching for inflated 1h totals in ncaa bball( relative to the pregame l1h line) then I pound the under   Nailed 3 straight 1hs last night   U 80.5 Clemson u 81.5 Arkansas u 70.5 Montana    The spot to hit seem around the 8-12 min mark left in half   These kids have a hard time keeping pace as legs get tired in later 1h  

@PUSSYGALORE333