How would I know?

To Old Upper Thomson Road, 26 km. I rush to cycle and forget to bring my wallet, which contains my identity card and moolah. If I hurtle through someone's windscreen, I'd be an unidentified flying object. How would I know if that would happen? How would I know if I'd need to hail a cab home? How would I know if my training for this weekend's race would be in vain? How would I know if my work and personal planning for the years and decades would pay off? I don't know. But I know that if I don't do some things, there'd be more things I don't know. I also know there are people who don't have wallets and don't know where their next meal is coming from. Whereas, I know that my wallet is at home. What a difference that makes ...