If you’ve been checking out the Singapore personal finance blogosphere, you might know Alvin Chow, who writes at BigFatPurse.com. Alvin and I spoke at a couple of events together, and we’ve hung out a couple of times drinking beer/coffee and chatting about psychology and investing. So when I was in Dhoby Gaut last month, I texted him and asked if I could drop by his new office: The dude was drinking whiskey. Before 8pm. That’s when I knew this was a guy I could be great friends with. Friends help friends when they write books, so this post is all about his new book: The Singapore Permanent Portfolio. First of all, I don’t normally promote other people’s stuff on this blog unless I think they’re really, really good. Sometimes, companies contact me wanting to advertise their website, app, book, investment scam opportunity and I usually ignore them. But Alvin’s different. He quit his high-flying Air ......