Breakage is uncommon because of the strength of modern pavers, that’s one of the great advantages of pavers.
But if something out-of-the-norm happens that causes a single paver or just a few to crack or break, you or your installation company can remove and replace that broken paver easily, within minutes even. You can’t do this with concrete! With every project, we leave behind a good number of material for our clients for this purpose.
And we just happened to have shot a short video for Instagram that demonstrates this.