Definitely apply it everywhere.
With seduction though, the way I see it is simple:
Some guys want to learn shocking openers, they over-think it... "I'll jump from a bush, tell her she's sexy, then have a story about x, y and z. Then I false time constraint, then move her, then run a story,..........."
The reality is, 20 minutes has gone by and the girls just thinks this is all weird.
What you could do is just see a girl and say "Hi!".
It takes 2 seconds. And if she just doesn't respond, say "Hi!" to someone else... now only 4 seconds has gone by, you've approached 2 women. And if that second girl smiles, you just use the other 19 minutes and 56 seconds you spend on the first example, having a quick conversation with this girl, crack a joke, ask her if she'd like to grab a drink sometime, take her number, go have a sandwich, scratch your ass and learn a sonnet.
Ok, ok, I'm exaggerating. But it's simple. Don't over-engineer things. Don't waste time. Do the simple things right, if she's responding, AWESOME! If she's not, just smile, wish her a good day and approach a different girl.
That's why it's frustrating when guys AGONIZE over "that one girl" for months, trying to come up with all sorts of schemes and situations to make her fall in love, meanwhile she's not interested. In all those months, he could have just said "Hi" to a thousand women and had a cool girlfriend by now, and probably be happier than ever since the girl he has NOW, actually wants him too!