In 2010, not long after the iPad\u2019s debut, Steve Jobs famously said the tech world was transitioning to an era in which PCs would be like trucks and mobile devices would be like cars. In the \u201cpost PC\u201d era, computers would do the occasional heavy lifting but mobile gadgets would be our day-to-day devices, Jobs said.\n\tMaybe he was right. But I\u2019m not living a post-PC existence yet, and I doubt I will be anytime soon. The biggest reason: Mobile apps have become increasingly powerful, yet they almost always lack basic functionality that\u2019s available in \u00a0desktop software.\n\tI recently reviewed three iOS apps\u2014LinkedIn, Klout for iPhone, and Spotify\u2014that all lack key features found in their desktop Web or software counterparts. With LinkedIn\u2019s iPad app, you can\u2019t edit your profile, for example. The Klout for iPhone app doesn\u2019t let you create lists of social media accounts to follow, claim perks, or add social networks to your profile. Spotify\u2019s iOS app doesn\u2019t support its ecosystem of apps and you can\u2019t drag and drop songs into playlists.\n\tMore importantly, I\u2019ve yet to use a mobile app that gives me all the functionality of Microsoft Office desktop software, such as Word\u2019s Track Changes feature, which is essential to my work. Cloud-based apps like OnLive Desktop give you full Office apps on your tablet. But you need an Internet connection to use them. Taking a long plane ride without Wi-Fi? Sorry, you\u2019re out of luck.\n\tAnother example is the iOS version of the Safari browser. I can\u2019t quite pull off certain tasks in Apple\u2019s mobile browser that I have no trouble doing on my Mac. One big example: When entering new stories into content management systems, I may be able to accomplish some tasks in mobile Safari, but never all of them.\n\tThe upcoming Windows 8 OS might shift things significantly, because it\u2019s optimized for both traditional computers and touchscreen-enabled mobile devices. But to get full use out of a Windows 8 (or any other) tablet, I\u2019d need a physical keyboard. I\u2019m not going to type for more than, say, five minutes on a touchscreen keyboard. It\u2019s uncomfortable and inefficient.\n\tSo, to live in the \u201cpost PC\u201d era, I need another piece of equipment, an external tablet keyboard, to recharge and keep track of. And that spotlights another problem: Most external keyboards connect to tablets via Bluetooth, which is banned on many flights. I\u2019ve incurred the wrath of a cranky flight attendant before while using a Bluetooth keyboard, and it\u2019s not an experience I\u2019d care to repeat.\n\tA Windows 8 laptop that can also be used as a tablet might be just the ticket. However, we\u2019d no longer be talking about a \u201cpost PC\u201d device, because that device would be a PC.\n\tWhen mobile OS software offers a one-to-one parity with desktop software, and when tablets allow me to do absolutely everything I can do on my computer without having to carry around a keyboard, too, then\u2014and only then\u2014will I be joining the post PC revolution.