The article by Marina Cortês and Andrew R. Liddle discusses the latest results from the Dark Energy Spectroscopic Instrument (DESI) combined with cosmic microwave background (CMB) and supernova data, which suggest deviations from a cosmological constant in favor of evolving dark energy. The authors focus on the w0waCDM model, a two-parameter dark energy model, and explore the robustness of these findings. They introduce the concept of a pivot scale for the equation of state \( w \), which helps decorrelate the parameters \( w_0 \) and \( w_a \). The analysis shows that the evidence for evolving dark energy is concentrated in the derivative of \( w \) rather than its mean offset from \(-1\), indicating a new cosmic coincidence where the mean equation of state matches the \(\Lambda\)CDM model precisely within the observed window. This coincidence, termed the PhantomX Coincidence, suggests that the dark energy density reaches its maximum value within the observed range. The authors argue that conclusions about dark energy evolution are strongly influenced by the assumed parameter priors and that this coincidence may be a signature of this prior-driven effect. They emphasize the need for a more comprehensive understanding of the role of current assumptions in the \( w_0 \)-\( w_a \) plane to fully assess the robustness of these findings.The article by Marina Cortês and Andrew R. Liddle discusses the latest results from the Dark Energy Spectroscopic Instrument (DESI) combined with cosmic microwave background (CMB) and supernova data, which suggest deviations from a cosmological constant in favor of evolving dark energy. The authors focus on the w0waCDM model, a two-parameter dark energy model, and explore the robustness of these findings. They introduce the concept of a pivot scale for the equation of state \( w \), which helps decorrelate the parameters \( w_0 \) and \( w_a \). The analysis shows that the evidence for evolving dark energy is concentrated in the derivative of \( w \) rather than its mean offset from \(-1\), indicating a new cosmic coincidence where the mean equation of state matches the \(\Lambda\)CDM model precisely within the observed window. This coincidence, termed the PhantomX Coincidence, suggests that the dark energy density reaches its maximum value within the observed range. The authors argue that conclusions about dark energy evolution are strongly influenced by the assumed parameter priors and that this coincidence may be a signature of this prior-driven effect. They emphasize the need for a more comprehensive understanding of the role of current assumptions in the \( w_0 \)-\( w_a \) plane to fully assess the robustness of these findings.