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Amazon is planning to transition their 2-day Prime shipping to a 1-day shipping program and is spending a significant amount of money on this investment.

Technology can definitely make education better, but transforming education is a more complex problem than that. It starts with making better teachers. We should figure out a way to help teachers be better at their craft, and figure out which teachers are good and which are not. We need to make the job teaching as prestigious as we can.

Dr. Hadsell believes the former not the latter, that they are trying to develop AI as a general problem-solving approach. On the way, they are inspired a lot by human intelligence. Right now, mouse level AI is what they can successfully achieve.

In Janna Levin’s view, it’s the point that space expands into other space. In a sense, it’s a meaningless question. Anything that can be expanded into is part of the Universe because it’s a part of space.

The company did virtual reality for real estate. The product was a way to change how real estate worked by letting you virtually walkthrough a house without visiting the home.

He says that cold calling is hard, but he found out that most realtors are pretty talkative. He says it’s important to get straight to the point and ask good questions. Sometimes you will get hung up on or yelled at, but more often, you will have people talking to you when you offer them help.

Nir has a favorite fitness app that has been able to implement his ideas beautifully. Here are the four steps to getting hooked.

1 - Trigger - This is an itch the consumer wants to scratch, an uncomfortable phycological or emotional state a customer wants to change. Every habit-forming product has to figure this out.

In case of this fitness app, there's a lot of uncertainly about choosing something to do in the gym, and that's the trigger! "Getting in shape" is not a habit, it's an aspiration, so that doesn't work, but choosing something to do, that could become a habit. A habit is a discrete behavior you want to see repeated.

2- Action - What do you do now? - Open the app. It's easy to get a consumer into a simple habit that can be done without a conscious thought.

3 - Reward - Some kind of uncertainly of what you might find. This is what makes books fun to read and sports fun to watch. It's mystery! What exercise should you do now? The app chooses the exercises, including the reps, and the weights, making the act of lifting the weights to be the reward in itself.

4 - Investment - user puts something into the product to make it better with use. You , the user, store value. It also pre-loads a trigger for the next time, using the stored value.

Tikhon is a Y Combinator backed founder and investor. He started Scribd and Parse. He later sold Parse to Facebook.

Nobody knows. He is a sudo-anonymous person that simply goes by AJ. You won't find his picture, or learn his last name.

When you have a kid, some parts of your life remain the same, while other change, fundamentally. At some point you have to figure out if you still like your partner, if you still get along. You have to figure out your home life, and at the same time manage how to run your company while also being present around your family. You have to reprioritize everything.

The best leaders who have had to lead through uncertain times had continued to have hope and optimism about the future, while confronting the difficult reality.

Talk straight and be transparent about it with your people. Always tell the truth, and bring the right expertise and knowledge to get through the problems.

Your credibility is your asset, the trust that people have in you, is your currency. Spend it wisely.