I hope someone on here uses auto desk eagle to design pcb. Which simulation parts of Eagle are most useful for PCB design?

Which errors do you rectify in Eagle Auto Desk through simulation ?

 

I’m a bit of a rookie, but in the eagle library there is a library called spice simulation or something like that. I pull components from there when I can to do simulations. These may be different from the components I use for layout.

Hope that helps.