PANews, July 6th news, Vitalik Buterin responded to a user's views on collective carbon footprints. The user pointed out, 'It is common for industry professionals to fly around the world to attend multiple events each year (temporary cities do not solve this problem), but this behavior is not the actual goal of solving the problem. At best, it is for business, but more often it is for a rather selfish reason, which is to have a good time with friends, while we could choose to meet them in one place.' Vitalik responded, saying, 'It is acceptable to pay such a price to maintain the globalization of cryptocurrency rather than being overly concentrated in one geographical area. Moreover, this trade-off is more favorable than the negative impacts of mining.'