Oni of Chaos
The Barrel Roll Guy
Well if you're Celtic on a Highlands map you should probably build *some* walls 

Nopeola. No walls! Nyet. That's because you can spend the shields on units instead. You can use those units to discourage attackers, beat back attacks more effectively, and go on the attack.
Meanwhile, because all civs expand, at least at the beginning, you end up having to build walls in over half the cities to be effective. And in the part of the game where they most matter, walls are much more expensive than units. And you can't use them when you go on offense, which you need to do to win a war. Historically, the biggest walls were failures.
Even for places like Istanbul, I'd rather spend the effort on naval units or armies than walls. You don't need no stinking wall if both sides of it are your lake.
When I stopped building them, back in civ2, my games went much better.
A golden rule for civ strategies is, NEVER say NEVER. The poster already is flawed from the start when he gave his title for his strategy essay.
Actually, it's not an essay at all. It is closer to a paragraph showing a one sided and poorly thought out statement. I suppose it is for the best though, if he were to expand on this, there would no doubt be more flawed information.
(I'm not impressed)
Nopeola. No walls! Nyet. That's because you can spend the shields on units instead. You can use those units to discourage attackers, beat back attacks more effectively, and go on the attack.
Meanwhile, because all civs expand, at least at the beginning, you end up having to build walls in over half the cities to be effective. And in the part of the game where they most matter, walls are much more expensive than units. And you can't use them when you go on offense, which you need to do to win a war. Historically, the biggest walls were failures.
Even for places like Istanbul, I'd rather spend the effort on naval units or armies than walls. You don't need no stinking wall if both sides of it are your lake.
When I stopped building them, back in civ2, my games went much better.
Random question
If both parties in the modern era, And my city is being bombarded by artillery does the artillery bombard the walls. or are the walls taken out of the equation.
against a human opponent, if ur forced into your town and the enemy is pillaging, game is already over
Why does it matter if it was a year ago or yesterday? I'm more frustrated with all of the new posts that simply repeat discussions what was already discussed 2 years ago.
Over the years I've seen dozens of new posts about the usefulness of walls. I'd rather simply the old posts resurrect and see the discussion continue from there, rather than see new players rediscuss an old topic in a new time.
Yeah, last year (lol), I mentioned that castles come a bit too late for me to usually bother with, but I think there are two settings where they become more economically signifcant. The first being marathon, and the second being technology trading turned off.