Amir at a conference, a hackathon is a pleasure. Having him around is a sure way of getting all kinds of problems solved. Giving his intimate expertise of pywikibot and our projects he makes it seem easy to resolve issues. The biggest issue is often that it takes time for his bots to complete.
Amir has been to many conferences but we will have to miss him in London.. It took the British embassy several weeks and all kinds of excuses why it took so long to decide that they are afraid that he will not go back.
The success of Wikimania 2014 will not be as great because one of our best and brightest will not be among us.