A fear of falling

So I managed to lead one and a half routes. 

Wait, one and a half?

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Scarpa Charmoz

Why are we still making shoes with animal glue?

Why make a perfectly decent pair of synthetic shoes but fall at the last hurdle by not being quite sure whether the glue contains animals? Or why make synthetic shoes and put a dash of leather or suede for decoration?

The world is changing and the synthetic options for just about anything are astoundingly good.