discussed Cited "see, e.g." Partelow v. Massachusetts Tea Co., 871 F.2d 179, 181 (1st Cir.1989)); see also Crawford v. Lamantia, 34 F.3d 28, 31 (1st Cir.1994), cert. denied, 514 U.S. 1032 , 115 S.Ct. 1393 , 131 L.Ed.2d 244 (1995), rehr’g denied, 514 U.S. 1124 , 115 S.Ct. 1994 , 131 L.Ed.2d 880 (1995), (“[Njeither conclusory allegations, improbable inferences, and unsupported speculation, nor brash conjecture coupled with earnest hope that something concrete will materialize, is sufficient to block summary judgment.” (internal quotation marks and citations omitted)).