Assemble macroscopic materials with bond energies averaging 10 KeV not 10 eV.
https://x.com/AloneHemant/status/1852757181927698686/photo/1
Assemble kilograms or metric tons of materials with bond energies averaging 10 KeV not 10 eV. There are many such stable materials with active containment.
Asking for new fuels and materials to act like old ones is limiting the search for useful things. It just has to be reliable, practical, and useful. It does not have to be passive or easy.
Richard Collins, The Internet Foundation