Redshift evolution of the sSFR for the two models explored here. The red line corresponds to the fiducial model in which most stars formed over the last free-fall time (Eq. (6)) along with ±1σ uncertainties (red dotted) derived from data in 8 < z < 10. Black lines account for halo mass growth (Eq. (8)) and are shown for present-day halo values of log(M₀/M_⊙) = 10 − 15 (bottom to top) in 0.5 dex intervals; these curves approximately evolve as (1 + z)^5/2. Models are compared with available data points for high-z galaxies from (Bouwens et al. 2022a; Bradley et al. 2022; Strait et al. 2020; Stefanon et al. 2022, 2023; Topping et al. 2022; Tacchella et al. 2022; Smit et al. 2014; Endsley et al. 2021; Roberts-Borsani et al. 2022; Labbé et al. 2013; Robertson et al. 2023; Harikane et al. 2023a). The horizontal dashed line is the critical sSFR (Eq. (2)) above which outflows develop.