• The adding together of ideas proves that they can be added together but nothing else.
• A collection of supporting ideas does not support the existence of supporting experiences.
• Expertly crafted and added together ideas amount to a collection of ideas but not to external evidence.
• Determining the causal relation between ideas is not determining the causal relation between external events.
• The correlation of ideas is neither the correlation of external experiences nor the correlation of any of the ideas with an external experience.
