4 limit lead to ordered states emerging directly from the incoherent metal [23]. We leave the details of the mecha- nism of USC from an incoherent metal derived above to the future. In conclusion, we have studied the detailed nature of the incoherent metal with a low energy pseudogap using the first-principles LDA+DMFT. The anomalous charac- ter of the transport properties is interpreted in terms of electrical and heat transport by collective , multi-particle excitations. These arise from an Anderson orthogonal- ity catastrophe having its origin in the selective-Mott localization in LDA+DMFT. Excellent semiquantitative agreement with a whole host of transport ( ρ$_{dc}$ ( T ) and S ( T )) data with x puts our mechanism on solid ground. Our study puts strong theoretical constraints on how the ordered states (AF/USC) arise directly from the incoher- ent metal, and shows the crucial importance of Mottness in this context. of FeSe [12, 13], the non-LFL metal arises from orbital selective incoherence having its origin in the interplay between strongly orbital-dependent hopping (as in LDA) and strong dynamical inter-orbital correlations (DMFT); the non-LFL features are assigned to the generation of an Anderson orthogonality catastrophe in the local problem of DMFT [12]. Once this occurs, the spectral functions will exhibit a low energy PG with power-law like tails at higher energy, precisely as we find in the DMFT. In such a metal, the transport properties are dominated by collective, multi-particle bosonic excitations [19], rather than by LFL quasiparticles. Our LDA+DMFT results are consistent with this incoherence scenario based on Mottness, and excellent agreement with data from a num- ber of groups, as shown above, strongly supports our con- tention. Therefore, we extend our analysis to propose that re- lated materials have the potentiality to be of use as good thermoelectrics, at least at low T . To this end, we also need the thermal conductivity, k ( T ), also computable ex- actly in DMFT in terms of the LDA+DMFT propagators. In Fig. 2, we show the electronic part of the thermal con- ductivity [ k ( T )], along with the thermoelectric figure of merit, ZT = TS $^{2}$σ k . We find k ( T ) ≃ T 2 at low T , indi- cating that bosonic contributions dominate the electronic contribution to k ( T ). We suggest that measuring k ( T ) at low T will bare this contribution. At higher T > 10 K, additional phononic contributions will increase k ( T ) and decrease the electrical conductivity σ ( T ) ≡ A$_{0}$ ( T ), reduc- ing ZT . Thus, given the weak electron-phonon coupling in the Fe-based SC [20], we expect a small-to-moderate reduction in ZT at low T . Nevertheless, the high value of ZT , albeit at low T , is encouraging, and ways of improv- ing ZT at higher T , based on appropriate engineering are an attractive possibility. In particular, consideration of more geometrically frustrated members of the family of Fe arsenides and selenides could yield an appreciable S ( T ) ≃ T at high T arising from large spin and orbital fluctuations, as in NaCo$_{2}$O$_{4}$ [21], and increasing ZT . Given an incoherent non-LFL metal with low energy PG as above, the low T instabilities cannot involve usual particle-hole (p-h) (AF) or particle-particle (p-p) (USC) pairings in a LFL, since there are no coherent LFL quasi- particles in the non-LFL state in the first place. We be- lieve that these instabilities will then arise by studying the dominant two-particle instabilities of such a metal. 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