Thoughts on Bitcoin and OP_CAT: *Bitcoin's system is remarkable*. It is properly decentralized and it provides its users with security and censorship resistance. Like it was meant to do. The mechanism is good enough *for now*, but we need to think long term. In the long term, the current incentives for miners will not be enough. Low fees for miners will reduce security, the integrity of Bitcoin could be compromized, and its value might be affected. *Bitcoin has to evolve*. OP_CAT is one way to do that. It will allow scaling Bitcoin into new use-cases and new audiences and it will bring more throughput - hence fees to miners - to the system. This remarkable system has real value. It would be a shame to limit its application and its audience. *I get why some Bitcoiners oppose to it*, I really do. Any change can bring new challenges and problems. Any planned change needs to be done after a thorough research on potential problems it might bring along. Real homework is required here. *But* choosing not to change anything and to keep everything right where it is does not mean Bitcoin will remain free of problems (it already faces challenges). The system may stay the same, but the setting it operates in is changing. *It will face a challenge whether it evolves or not*. *Bottom line*: Bitcoin has real value, we should protect it and spread it even wider. OP_CAT is a good way to do that, and with careful planning we can provide solutions to whatever challenges it may bring. We should evolve and we can do it in a mindful manner.