The critics would have declared Dali a lunatic if he hadn't had such formidable classical painting skills.
He placed his repeating images (the notorious melting watch, the face and body of his wife, the ornate and fierce skeletal structures of unknown creatures) on the canvas as if they had as much right to be there as any familiar object.
This was quite troubling to many people. If an immense jawbone that was also a rib or a forked femur could rival a perfectly rendered lamp or couch or book (on the same canvas), where were all the accoutrements and assurances of modern comfortable living?