That said, I have a small problem with the examples presented to say that already machines understand us :)
The article says 'For example, when I tell Siri “Call Carol” and it dials the correct number, you will have a hard time convincing me that Siri did not understand my request"
Let me try to take a shot at trying to explain that Siri did not "understand" your request.
Siri was waiting for a command and executed the best command that matched. Which is, make a phone call.
It did not understand what you meant because it did not take the whole environment into consideration. What if Carol was just in the other room. A human would maybe just shout "hey Carol, Thomas is asking you to come", instead of making a phone call.
If listening to a request and executing a command is understanding, then computers have been understanding us for a long time. Even without the latest advances in AI.