Can't edit vertices on hand I'm trying to scale up the hands but the vertices aren't selectable. The hands were made separately, but it's all in one object now with an armature and all that. All the other vertices are editable.
The vertices were just hidden. I found this which worked.
process for other newbies:

Select the object
Enter edit mode
Select all with 'A' key
Show hidden using 'Option' + 'H' key