I learned that you shouldn't start a tech company in a country where Uber is illegal, as it can create significant challenges.

Hard tech startups face unique challenges, including operating in undefined arenas without well-developed supply chains, requiring them to develop all necessary building blocks for their technology.

Crowdfunding can create significant challenges for hardware startups, as many founders lack a clear understanding of costs and timelines, leading to unmet expectations.

Investing in startups is high-risk, and potential investors should be prepared for both significant upside and possible losses.

Scaling negative margin businesses, like those seen in ride-sharing, has become more challenging due to rising interest rates and investor reluctance to fund such models.

Founders should avoid vague pitches like 'AI for trucking' and instead focus on specific solutions they will provide to the industry.

Starting a business with low margins creates a negative feedback loop, making it harder to raise funds and sustain operations, as seen with FlightCar's struggles during its early days.

The current investment landscape in India is overly focused on safety and early revenue, which may hinder the growth of true technology companies.

I regret not investing in Airbnb when I had the chance; I was focused on my own startup and missed the opportunity to meet with them before they signed with Sequoia. If you move slowly in investing, you're likely to face adverse selection; companies that take too long to engage may not be the best opportunities.