Sentences with phrase «impossible over that time span»

According to Morningstar, to gain any edge, active investors have to be correct 70 % of the time, which is virtually impossible over that time span.

Not exact matches

The cost of construction over such a lengthy time span is impossible to calculate exactly.

Only one of the past «Big Five» mass extinctions (the dinosaur extinction event at the end of the Cretaceous) is thought to have occurred as rapidly as would be the case if currently observed extinctions rates were to continue at their present high rate (Alvarez et al., 1980; Barnosky et al., 2011; Robertson et al., 2004; Schulte et al., 2010), but the minimal span of time over which past mass extinctions actually took place is impossible to determine, because geological dating typically has error bars of tens of thousands to hundreds of thousands of years.