Exact(1)
Building on ideas first set out in Trivers' (1971) classic paper on "reciprocal altruism," Axelrod and Hamilton (1981) described a simple "tit-for-tat" strategy, in which an organism helps on the first appropriate opportunity and then helps on subsequent opportunities if and only if the partner helped on the previous appropriate opportunity.
Similar(7)
Advance sales also helped; on the first weekend of release 98 theaters were in communities where at least 1,000 tickets had been presold, said Kris Fuhr, Provident's vice president for theatrical marketing.
It certainly succeeds on the first count, and given the thumbs-ups and high-fives I received on my test drive, it may help on the second.
McIlroy's mood was not helped on the seventh green in the final round when the wind blew his ball as he was addressing a birdie putt, prompting a one-stroke penalty that resulted in a bogey six.
I mean, the Giants were helped on the way to the first touchdown of their 21-17 victory when the Patriots contrived to have too many players (12) on the field.
Drew Johnson, a senior at the University of Arkansas who had just returned home for the summer, recruited his fraternity brothers to help on Monday, first at the home of his grandmother, half a mile to the northwest.
Deciding that perhaps my infusion methodology was the problem, I decided to seek outside help on the fifth day of my CBD week.
The European Commission's communication from 2009 on Critical Information Infrastructure Protection helped established the first pan-European Cyber Exercise.
Write better and faster with AI suggestions while staying true to your unique style.
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com