The idea of gaming on an ultra-portable system with an 11.6-inch screen sounds great until you try it.

FORBES: No Refresh For The Alienware M11x Ultra-Portable Gaming Notebook

You may not know what you need to know until you try something.

FORBES: "Leaning In" is Not Enough: Women Entrepreneurs Need to "Leap In"

And yet, if you are to speak the language, you are not going to learn it until you try speaking it.

FORBES: Next Pope Will Inherit An Established Social Media Presence With Room To Grow

The argument that some matters, such as abortion, are of such moral urgency that they supersede a general preference for devolution sounds reasonable, until you try to decide which subjects are suitably urgent.

ECONOMIST: Republicans are for states�� rights��when it suits them

You really don't know until you try it.

NPR: DERBY LIVE: Orb Wins After Surging Among Bettors

You can say and think that you are appreciating what the other person is doing but until you try the task yourself, and realize how much goes into it, you are operating on a partial understanding.

FORBES: Role Reversal: Change Your Business For the Better

You never know until you try.

FORBES: What Are The Worldwide Events For Indie Game Developers?

If you cannot describe your idea in 140 characters or less, try again until you can.

FORBES: Why Apple Uses 67 Characters To Describe The iPhone 5

It acknowledges that you don't always win, that when things don't turn out well, you try a different approach and then another until you find a solution, until you reach a new continent, until you write the right constitution, until you invent the right machine.

CNN: Is optimism really good for you?

If, on the other hand, you were to buy summer gasoline and try to store it until winter, you might find yourself having problems getting the fuel to ignite, due to the lower vapor pressure.

FORBES: Why Spring Means Higher Gasoline Prices

You don't really know how much you can do until you stand up and decide to try.

WHITEHOUSE: It's Work Creating Jobs, But It's Worth It

Should you try and hide your pregnancy until after you receive an offer, or be upfront with your potential employer?

FORBES: The Unofficial Rules of Job Hunting While You're Pregnant

But, you know, we (unintelligible) until we try to talk or something to it.

NPR: Really Important Football Game Coming

"OK, do not try to pull their vehicle over until we get you some more backup, " he was told.

CNN: From fear to cheers: The final hours that paralyzed Boston

Now many of these add-ons will slow down Firefox very slightly so I would not try to download them all - and remember - the downloads will not take effect until you restart the browser.

BBC: Talk Shoe