“It is not the wind that deter­mi­nes the direc­tion, but the sail.” Sin­ce time imme­mo­ri­al, natu­ral sign­posts, signs, sym­bols, objects and buil­dings have ser­ved com­mu­ni­ca­ti­on and ori­en­ta­ti­on – and not just sin­ce Odys­seus’ 10-year odys­sey on the high seas. But what are the pre­re­qui­si­tes for suc­cessful ori­en­ta­ti­on so that the jour­ney does not beco­me an Odys­sey? When should a chan­ge of cour­se take place?