the defendant tobias keller is charged with committing the criminal act described under article 98a of the causal authority regulations , the reasons being that at six fifty a.m. on march 12th of the present year he connected the extraordinary activity device to the faculty of his free will , and having observed over the monitor a set of circumstances at the site which would allow him to carry out his plan , he set a trap for the bicyclist in the form of a sizable egg-shaped pebble , after which the bicyclist abruptly veered off his route in an attempt to avoid the above-mentioned pebble and sped toward the excavator that was advancing from the opposite direction , thus causing a sequence of events with the purpose of involving an intermediary in order to exert an unanticipated influence on the subject , i.e .