Holistic/System Thinking: You're working in a project integrating the ticket machine and system of mass transportation network in Bangkok (BTS, BRT, MRT, Airport Links). Your current sprint backlog is to develop a system for single journey tickets, and today's session is to brainstorm the advantages (+) and disadvantages (-) of the system currently used in Bangkok. From these positive and negative points addressed in the brainstorming session, please a recommend the system that of which system shall be the (5 points)