\begin{tabular}{@{}p{6.3cm}lp{3.2cm}lp{3.8cm}@{}}
\toprule
Object & Symbol & Value & Status & Source\\
\midrule
Labor share of GDP, 2023 &  & 0.568 & data & PWT via FRED\\
Nonresidential fixed assets / GDP (comparison) &  & 1.22 & data & BEA via FRED\\
Structures / GDP implied by income shares & $K^N_0$ & 1.71 & calibrated & residual of the income identity\\
Residential structures / GDP & $K^H_0$ & 1.17 & data & BEA via FRED (derived)\\
Energy capital / GDP & $K^E_0$ & 0.30 & assumed & assumption\\
Value of compute capital / GDP & $p^Q_0K^Q_0$ & 0.062 & data-derived & IPE investment capitalized\\
Depreciation: structures, housing, compute, energy & $\delta_k$ & 0.089, 0.023, 0.25, 0.05 & data / assumed & BEA via FRED; accounting lives\\
Adjustment costs & $\phi_k$ & 3, 3, 1, 3 & literature & Cooper--Haltiwanger (2006) order\\
Real return in the frozen BGP & $r^*$ & 0.035 & assumed & between TIPS (1.96\%) and returns on wealth\\
Trend growth per efficiency unit & $g_Z$ & 0.015 & assumed & real GDP growth 1990--2025 minus population\\
Curvature of utility & $\gamma$ & 2.0 & literature & \\
Discount factor (implied) & $\beta$ & 0.9954 & calibrated & $\beta=(1+g_Z)^\gamma/(1+r^*)$\\
Housing expenditure share (implied) & $\theta_H$ & 0.162 & calibrated & housing value added 12\% of GDP\\
Land share of housing (implied) & $\nu_H$ & 0.420 & calibrated & housing Euler\\
Resource share in energy (implied) & $\eta$ & 0.353 & calibrated & energy Euler\\
Energy sector output / GDP &  & 0.040 & assumed & assumption (electricity 1.7\% + other)\\
Data-center share of electricity, 2023 &  & 0.044 & data & Shehabi et al. (2024)\\
Production land rent / GDP &  & 0.030 & assumed & assumption\\
Elasticities: tasks; tasks--structures; top nest & $\sigma_B,\sigma_N,\sigma_T$ & 0.5, 0.7, 0.6 & literature & Oberfield--Raval; Chirinko\\
Workers of skill $L$; skill premium & $H_L$; $w_H/w_L$ & 0.6; 1.7 & assumed & \\
CES task weights (implied) & $\nu_i$ & 0.262, 0.360, 0.189, 0.189 & calibrated & task wage shares\\
Compute per worker, task 1, 2026 (implied) & $\alpha_{1,0}$ & 14.9 & calibrated & compute Euler and task-1 tie\\
Implied compute share of task-1 input, 2026 &  & 0.2184 & implied & \\
Terminal compute per worker by task & $\alpha_i^\infty$ & 1, 2, 4, 8 & scenario & normalization $\alpha_1^\infty=1$\\
2026 compute per worker by task (multiples of terminal) & $\alpha_{i,0}/\alpha_i^\infty$ & 15, 50, 400, 3000 & calibrated / scenario & \\
Capability progress; compute price decline; efficiency gains & $g_\alpha,g_{pQ},g_\varepsilon$ & 0.1, 0.15, 0.1 & scenario & Epoch: 0.34 for GPU FLOP/\$\\
Floors (fraction of 2026): compute price; energy per unit & $\underline p/p_0,\underline\varepsilon/\varepsilon_0$ & 0.01, 0.01 & scenario & \\
\bottomrule
\end{tabular}