A POTENTIAL SOLUTION: A first step has already been taken. A new experimental test prototype, a stable BareSole has been designed to have safe lateral stability like the barefoot. It has proven successful in testing so simple it can be verified by anyone. It is also uniquely comfortable. Factory-built, using only existing footwear technologies that are free and open, its design is not covered by utility patents.
Much more detailed information on the sole instability defect and how to fix it, as well as on the design and development of the experimental test prototype BareSole of the Frampton EllisTM slide is now available in a first full draft of a new book by Frampton Ellis titled, UNNATURAL INSTABILITY (Click to Download).