• get_human_waiting() : take_human_input
• gui_thread() : take_human_input_v1 , take_human_input
• platform_thread() : take_human_input , take_human_input_v1
• process_request() : take_human_input_v1
• set_human_waiting() : take_human_input
• task_delivery() : take_human_input_v1
• task_guiding() : take_human_input_v1