There is a well known fact about memory and 7: http://en.wikipedia.org/wiki/The_Magical_Number_Seven,_Plus_or_Minus_Two http://en.wikipedia.org/wiki/The_Magica

There is a well known fact about memory and 7: http://en.wikipedia.org/wiki/The_Magical_Number_Seven,_Plus_or_Minus_Two http://en.wikipedia.org/wiki/The_Magical_Number_Seven,_Plus_... But i don't think it applies to words (other languages are very different) If you want a (still speculatory) but rigorous take on this: http://www.med.nyu.edu/buzsakilab/content/PDFs/Buzsaki2010Neuron.pdf http://www.med.nyu.edu/buzsakilab/content/PDFs/Buzsaki2010Ne...