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A couple points:

- Yes the efficiency of the laser is poor and modern tech is more efficient, but not enough to make it an energy producing process. The best lasers are ~50% energy efficient.

- This can only be maintained for short periods of time and the time to restart the process in long. Not only that, tritium is a rare isotope. These are probably the largest challenges to overcome.

- The energy is released in the form of high-speed particles, and there is no efficient energy capture process.

The significance of their achievements is overblown. Yes, they achieved ignition, but no it is just an incremental process towards commercial fusion power.



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