Today, I saw many friends talking about Google's release of anti quantum technology, which reminded me of the meme 'millennium bug'. Many post-2000 friends may not know what a millennium bug is. Before 2000, many old systems only wrote the last two digits of the year to save storage space. For example, if 1999 was written as 99 or 2000, it would become 00. So at that time, many people were worried that once we crossed to the year 2000, systems such as banks, airlines, governments, electricity, and communication would have widespread problems or even collapse directly due to the inability to correctly identify the year. So in 1999, the media constantly amplified risks and the market was also filled with tension. As a result, on January 1, 2000, the world did not collapse as many people had feared. But this does not mean that the millennium bug is fake, but rather because the global problem was solved before it actually broke out. Nowadays, many people are discussing quantum and Bitcoin, which is a bit like the millennium bug of the past. It's not that the risk doesn't exist, but rather whether the entire system has enough time to complete migration and repair before it becomes truly destructive. So seeing Google pushing anti quantum should not be directly understood as BTC being doomed by 2029, but rather as having already started preparing to address this issue. The day when quantum technology can practically crack Bitcoin, the unlucky ones will not be just Bitcoin, but the entire traditional world built on public key cryptography.