It's much easier to predict what will happen than it is to predict when.
For example, I can make the following predictions:
Facebook will collapse
India and China will erupt into violent war
We will experience a water crisis
Oil will run out (that one is actually easier, about 3 decades)
Iran will be invaded
These are all fairly obvious predictions. Sometimes math can be used to zero in on dates, but for most of us around here, we simply do not have enough information to calculate exact dates. We can only speculate.
The article is analyzing the future of facebook, saying today, that it will not be around at some point, which is contrary to many current opinions.
But I say the media will start to discuss an inflection point in Facebook before the end of the summer. They'll talk about how its oldest users are leaving, but its still getting new members. It will talk about a decline in the length of the average lifetime of a facebook account. It will say fewer people are logging in as much. Fewer new apps are being developed. Again, all by the end of the summer.
By the end of this year, we'll start to see lots of "will xyz.com replace facebook?" Apple could launch a social network. Bloggers/journalists will ask, "When will apple create a social network?" They'll start to point out growth in other social networks, they'll talk about where the facebookers are going. All this by the end of 2010.
By the end of 2011, facebook will be passe among the internet elite. The oprahs of the real world will start saying you can interact with them somewhere other than facebook. Commercials on TV will mention some other network instead of mentioning their facebook page like they do now.
By the end of 2012, the blogosphere will be talking about what mark did wrong, why people thought it was different, why it was the same, lessons the new start up social networks can learn from his mistakes.
By the end of 2013, facebook will be a distant memory...