Observation of S09-11

What is interesting about this event, which is composed of nine footprints, are the different reactions to an obstacle lying in the path of the three subjects. The obstacles are five blocks of small dimensions with a maximum length of 50 cm. While subjects S7 and S8 stepped over the obstacle, subject S9 has swerved towards the western wall shortly before the obstacle, yet one cannot speak of an abrupt change of decision, but of a slow change of walking direction. The three trackways of the three subjects include relatively few footprints. Subject S7 left a trackway consisting of three footprints – left (S7-10), left (S7-11) and right (S7- 12), subject S8 left a trackway consisting also of three footprints – right (S8-11), right (S8-12) and left (S8- 13) - and subject S9 finally left a trackway consisting of two footprints – left (S9-10) and right (S9-11) (Fig. 23), and additionally an isolated right footprint (S9 - 9) (Fig. 22).