How do the Major System, PAO, and the memory palace form a complete toolkit?

Major System encodes digits, PAO compresses items into composites, and the palace stores everything in order — encode, compress, sequence.

* The three tools as one pipeline: Major encodes, PAO compresses, the palace stores in order. *

Each solves one problem, and together they cover the whole task:

That trio is the standard kit behind essentially every memory-sport feat.

Go deeper:

• Method of loci (Wikipedia) — states practitioners combine loci with the Major System and PAO.