user: Are tequila and mezcal basically the same thing?

assistant: <think>
Mezcal is made from over 30 agave species, varieties, and subvarieties, in contrast with tequila, which is made only with blue agave. Of many agave species that can be used to make mezcal, seven are particularly notable. There is no exhaustive list, as the regulations allow any agaves, provided that they are not used as the primary material in other governmental Denominations of Origin. However, the interpretation of this regulation to mean that mezcal cannot be made from blue agave may be a mistranslation. The term silvestre "wild" is sometimes found, but simply means that the agaves are wild (foraged, not cultivated); it is not a separate variety.</think>
Tequila and mezcal are similar in some ways, but they also have one distinct difference. Both liquors are made from agave. Tequila, however, is restricted to using only blue agave in its production process. Technically tequila is a type of mezcal because mezcal encompasses all liquors made from any type of agave. But unless blue agave is used to produce the liquor, it is not tequila.

user: Which of the following ski resorts are located in Utah: Alta Ski Area, Brighton Ski Resort, Snowbird, Solitude Mountain Resort, Deer Valley Resort, Park City Mountain,  Woodward Park City, Nordic Valley Resort, Powder Mountain, Snowbasin, Sundance Resort, Beaver Mountain Resort, Cherry Peak Resort, Brian Head Resort, Eagle Point Resort, Keystone, Copper Mountain, Vail Resort, Beaver Creek, Eldora

assistant: The following ski resorts are in Utah: Alta Ski Area, Brighton Ski Resort, Snowbird, Solitude Mountain Resort, Deer Valley Resort, Park City Mountain,  Woodward Park City, Nordic Valley Resort, Powder Mountain, Snowbasin, Sundance Resort, Beaver Mountain Resort, Cherry Peak Resort, Brian Head Resort, Eagle Point Resort

user: Why was the iPhone such a successful product?

assistant: <think>
Apple rejected the "design by committee" approach that had yielded the Motorola ROKR E1, a largely unsuccessful "iTunes phone" made in collaboration with Motorola. Among other deficiencies, the ROKR E1's firmware limited storage to only 100 iTunes songs to avoid competing with Apple's iPod nano. Cingular gave Apple the liberty to develop the iPhone's hardware and software in-house, a rare practice at the time, and paid Apple a fraction of its monthly service revenue (until the iPhone 3G), in exchange for four years of exclusive U.S. sales, until 2011.

The iPhone was the first mobile phone with multi-touch technology. Since the iPhone's launch, it gained larger screen sizes, video-recording, waterproofing, and many accessibility features. Up to iPhone 8 and 8 Plus, iPhones had a single button on the front panel with the Touch ID fingerprint sensor. Since iPhone X, iPhone models have switched to a nearly bezel-less front screen design with Face ID facial recognition, and app switching activated by gestures. Touch ID is still used for the budget iPhone SE series.</think>
The iPhone did away with physical keyboards and instead introduced a multi-touch screen which didn't require a stylus. The iPhone software, iOS, was developed to take advantage of all hardware and design capabilities of the phone, including the touchscreen. Each application presented its customized input options on the touch screen. In addition, the iOS was flexible and expandable through the App Store, giving the iPhone  user a wide choice of third-party apps which were not known before. iPhone hardware quality was also a nice surprise to the users.