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(WIRED) -- Apple never specified what the "S" stands for in iPhone 4S, and it may as well stand for Siri.

Sure, the fifth-generation iPhone's superb camera and speedy dual-core processor are classy additions. But Siri is the reason people should buy this phone.

When I step out of my apartment today, a reminder will pop up on my iPhone 4S to deposit checks at the bank. Tonight I'm meeting my friend Peter, who wants to eat steak, so I can say, "I want prime rib" to find steakhouses nearby. I have a meeting with a colleague Alexis this Thursday, and I can add that in my calendar just by saying, "Schedule meeting with Alexis on Thursday at 3 p.m."

I did all of this with the iPhone 4S's new built-in app Siri, a voice-recognition technology that Apple inherited when it acquired Siri Inc., a San Jose-based startup, in 2010. The enhanced voice tool is an iteration on Apple's previous Voice Control feature that debuted in the iPhone 3GS in 2009, which only allowed voice-powered phone dialing and music selection.

To give you an idea of how convenient Siri is, it takes about three seconds to create a reminder with a voice command, as opposed to the 10 seconds it takes me to manually type an event into a to-do list or calendar entry. Before, with the standard iPhone calendar, I would often forget to add an event because I was too busy to type it, and as a result I would forget I had something scheduled altogether. With Siri and Apple's new Reminders to-do list app, it's unlikely I'll forget anything important again because the process is so effortless.

It's kind of like having the unpaid intern of my dreams at my beck and call, organizing my life for me. I think Siri on the iPhone is a life changer, and this is only the beginning.

When Mohamed Bouazizi set himself on fire in Tunisia in January, he did not only ignite a series of unpredicted revolts but also heralded the first appearance of Arab youth on the stage of modern history.

Young people in the Arab world, who had been undermined and perceived as a development burden on the region, became a promise of progress in a new era.

Young people suddenly felt as if a new dimension was discovered through which they could mobilize. They finally exercised their rights and, more importantly, said "never again" to the era of absolute domination and authoritarian regimes.

Their ambitions led them to sacrifice their lives while calling for the replacement of the humiliation and dehumanization they have long experienced with human rights, democracy, equality and legitimate governance.

Millions of youth like me who lived an entire life under one autocratic ruler suddenly changed from being subjects in a society where public opinion didn't matter to being citizens reconfiguring the political, cultural and media spheres. With these movements, a few months of the Arab Spring created a sense of Arab solidarity that decades of political rhetoric and ideological slogans failed to achieve.

I was lucky to visit Tunisia, Libya, Egypt and other Arab countries a few months before the uprising and then witness after that how those historical moments reshaped the identity of young people living in these countries.

Visiting Cairo again in July during the renewed protests was a completely new experience and I could not feel this sense of solidarity anywhere more than in Tahrir Square.

I received exceptional greetings and a warm welcome every time protesters found out I was from Yemen, and many of them insisted on inviting me for a "freedom tea" during which we had endless discussions about the situation in Yemen and the progress of the revolution.

Everyone was surprisingly well-informed and up-to-date with the events in every Arab country going through a process of profound changes and reform. I felt as if Cairo's Tahrir was the headquarters of the Arab uprising.

The dramatic shift in how young people in different countries recognize each other is astonishing. In the past our ties were shallow and negatively affected by numerous crises and conflicts we witnessed in the past decades, offering youth more reasons to disagree and even demonize each other in many cases.