user: What is C?

assistant: C is a general-purpose computer programming language. It was created in the 1970s by Dennis Ritchie, and remains very widely used and influential. By design, C's features cleanly reflect the capabilities of the targeted CPUs. It has found lasting use in operating systems, device drivers, protocol stacks, though decreasingly for application software. C is commonly used on computer architectures that range from the largest supercomputers to the smallest microcontrollers and embedded systems.

user: What does CMWCs stand for?

assistant: <think>
The Cycle Messenger World Championships, or CMWCs, are an annual urban cycling competition whereby cycle messengers and cycling enthusiasts showcase their skills in an array of events, many of which simulate everyday tasks for a cycle messenger. Each year, the CMWCs are held in a different city around the world, with each host city designing its own unique course. The highlight of the CMWCs is the main race in which cyclists are given manifests and must pickup and deliver items to various locations around the host city as quickly and efficiently as possible. The total number of pickups and deliveries, or "drop offs" is unknown to the messengers before the race, but has been known to reach up to 100 stops and usually takes between 3–4 hours to complete. The cyclist who completes all of the assigned deliveries in the least amount of time wins the race. In addition to the main race there are also several side events which have become increasingly popular over the past few years. These events change yearly depending on the discretion of the host city but usually include backward circles, bike polo, bunnyhop, cargo race, longest skid, sprints, and trackstand.</think>
The Cycle Messenger World Championships

user: What is the best time of year to visit Lake Tahoe?

assistant: The best time to visit Lake Tahoe?  The answer depends on your interests (or possibly the interests of the person advising you).   

Snow lovers:  if you count down the days until the mountain resorts open up, Winter is the time for you.  Most resorts open around Thanksgiving and typically close in mid-late Spring.  Tahoe has several world-class ski resorts; with Northstar and Palisades being favorites on the North shore, and Heavenly Mountain being the favorite on the South Shore.   If flying down the mountain isn't appealing, you can go sledding, snowshoeing or snowmobiling.  The snow capped mountains reflected on the deep blue waters of Tahoe make for epic winter sights.  There's plenty of joy to be had staying inside, cozying up by the fireplace and simply enjoying the peaceful scenery outside your windows.   

Sun Lovers:  Tahoe Summers are for you.  The Lake: beaches, marinas, restaurants, music and people galore.   The lakeside vibe on Tahoe's beaches is casual and fun.  Boaters & sailors highly regard Tahoe's famous blue waters.  Tahoe is a kayaker's paradise with so many stunning coves to explore.  Venture over to Emerald Bay to see where the lake turns from blue to green & visit the historic island in the middle.   Hikers and cyclists; when the snow melts, there are countless trails to explore, including long segments of the famous Pacific Rim trail.  For those who prefer leisurely strolls, there are some spectacular walking paths right along the lake.   Floating down the Truckee River is a must-do for a frolicking day of fun. Campers love Tahoe as well, with many fun campgrounds to visit; some even within a short distance to the bustling streets of Stateline South Shore, where there are casinos, restaurants and music venues.  Golfers can rejoice on the world class course along the lake at Edgewood.  

In the transition months, the scenery is equally beautiful; and the tourist crowds are much smaller.  Some people favorite the Spring and Fall in Tahoe, simply for a more secluded, scenic mountain getaway; catching either the tail end of the snow season or the early warmth glimpses of Summer. 

Tahoe is a year-round destination.  The best time to visit truly depends on the type of getaway you're seeking.  My recommendation: Try all 4 seasons; you may find that it's impossible to pick a favorite!