Something we see all the time
The boardroom that looked perfect on paper
A client often brings us at Maintexx a neat plan with a 14-seat boardroom. The 2D drawing looks fine. Then we build it in 3D, drop in real chairs, and notice nobody at the far end can push their chair back without hitting the glass wall.
We move one partition 600 mm. On screen, that takes a few minutes. On site, it would have meant pulling out glass, re-running cables and losing a week.
Mistakes are cheap when they're still pixels.