Hyperdiffusionism is specifically different from Trans-cultural diffusion in a few ways, one being that hyperdiffusionism is usually not testable due its pseudo-scientific nature (Williams 1991, 255-156).

Assuming trans-cultural diffusion, MacKenzie (1923:54) suggests that the Chinese "horned-dragon, or horned-serpent" derives from the Egyptian Osiris "water-serpent".

Further examination led archaeologists to infer that these cultures influenced one another and that certain artifact design styles moved from one society to another through trade, social links, migration or invasion, in a process of trans-cultural diffusion.

It would appear that existing scripts provided his inspiration, even if he did not fully understand them, much as the Roman alphabet inspired the illiterate Sequoyah when he invented the Cherokee script, in a process called trans-cultural diffusion.

Additionally, unlike trans-cultural diffusion, hyperdiffusionism does not use trading and cultural networks to explain the expansion of a society within a single culture; instead, hyperdiffusionists claim that all major cultural innovations and societies derive from one (usually lost) ancient civilization (Williams 1991, 224-232).

Numerous inventions and techniques have contributed to the contemporary logo, including cylinder seals (c.2300 BCE), coins (c.600 BCE), trans-cultural diffusion of logographic languages, coats of arms, watermarks, silver hallmarks and the development of printing technology.

The hypothesis of these researchers is not that rongorongo was itself a copy of the Latin alphabet, or of any other form of writing, but that the concept of writing had been conveyed in a process anthropologists term trans-cultural diffusion, which then inspired the islanders to invent their own system of writing.