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Quantum computers are useless
(Fig.1) Today's useless quantum computers cannot factor even 21, much less calculate molecular energy.

Today's useless error-prone quantum computers cannot factor even simple 21, let alone calculate molecular energy, contrary to overhyped fake news (= all of which were calculated by ordinary classical computers ).
The 3rd-paragraph of this recent hyped news (2/2026) says
"A new approach to overcome a critical limitation hindering the progress of quantum computing for complex chemical simulations has been demonstrated. The unitary coupled cluster (UCC) algorithm (= just choosing fake solutions for unsolvable Schrodinger equation ), a promising (= still useless ) method for calculating molecular energies on quantum computers"
↑ This research paper's p.2-2nd-paragraph says (= this-last-link ) -- Only classical computers used
"In this work, we focus our calculations on classical machines with systems that can be solved via full
configuration interaction (FCI) calculations"
↑ So this research on the alleged quantum computer' molecular energy calculation used only a classical computer instead of the useless quantum computer after all.
Another hyped news (2/2026) on workable quantum computer ↓
1st-paragraph says -- Only classical computer used
"A team of researchers.. used a series of supercomputer simulations (= classical computer was used ) to reduce the uncertainty of obtaining information from quantum dots"
2nd-paragraph says -- Today's fake quantum computer
"Today's quantum computers, on the other hand, are based on only dozens of qubits. Experts estimate that it’ll take about a million qubits to power a true quantum computer. Which is a tall order today."
↑ Today's quantum computers are fake computers, which cannot calculate anything nor outperform classical computers

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