Part 3/12:
The first and perhaps most critical difference lies in usability and reliability. Using Lightning on multiple occasions, the speaker encountered frequent failures in transactions, especially when trying to send larger amounts. For example, attempting to transfer a small sum of $5 or even $10 sometimes results in failure, particularly as transaction sizes grow. The core technical issue is liquidity: for a Lightning payment to succeed, funds must be pre-locked in channels, with enough liquidity available between parties.