On emergency funds

Came across this post http://www.punchdebtintheface.com/2010/11/emergency-fun.html and wrote up a nice long comment, but in the end decided to be a little more modest. Seemed like a shame to throw it away though, so here it is.
I was just browsing around for blogs to read and came across this. I must say, I love that first commenter's style. Similarly:
1) I don't exactly have an emergency fund, but I do have a general consolidated car/house/wedding/emergency/retirement/small-business-startup/baby/education fund. I've been keeping my costs down to a bare minimum and once I position the latest piece that I want, investment income will be larger than living expenses. Then it becomes a toss up between volatility, security, growth and inflation.
2) About four years ago. I was able to save up so much because I was foolish/lucky/brave/stupid enough to be dumping virtually all my earnings into the stock market when it was pretty close to the bottom
3) Haven't had an "emergency" yet. My life depends on very little and I wouldn't have been able to do the above if I didn't feel remarkably comfortable in terms of job security. While looking into insurance options, I realised that my place could burn down and counting lost work time and security deposits on a new place, I could be going again for about $2k. Usually, I have that much money or more sitting around waiting to get into my general fund. Maybe I can cross the word emergency off that list. Though maybe it would be a good idea to cross baby off the list till there is a wedding and now that I think of it perhaps a wedding doesn't make sense without a partner.
4) Where does it start? Where does it end? Money moves fluidly to me. It's just there. I have a central hub that everything passes through, a savings account, a back-up hub, two investment accounts, and two retirement accounts, which I started before I realised that I could retire a few decades before I'll be able to touch that money. None of these are particularly set aside for emergencies. I run my hubs down to the dollar, the savings account just runs up and down. Flow into the investment accounts have been strictly one way. I guess that would be a no.