But he didn't reckon on the inexorable pull of gravity from Earth's nearest celestial neighbor.
Such doubts will make Afghans less likely to reckon on the government enduring and hence more likely to fight it.
In spite of everything, the American economy has been growing somewhat faster than most of the big industrial economies, and most forecasters still reckon on a reasonably healthy pace of expansion this year.
State legislators not usually the most intellectual of folk reckon professors on six-figure salaries are doing just fine.
At the limit, Suez might reckon merely on a dividend or two.
Tata has done very well on JLR but most analysts reckon it overpaid on its larger deal for Corus.
Some experts reckon the law on intercepts would not make listening to someone's messages after that person had heard them an offence, distasteful as it might seem.
But now that his government accepts that tobacco and alcohol should be put in the same category for treatment and research, France's reformers reckon they are on a roll.
When central banks start stocking up on more gold, the gold bulls reckon their own positive stance on the metal remains on very solid footing.
FORBES: Comex Gold Up, Hits New Record High, on Fresh Safe-Haven Demand
Since the 1998 election, which he won as a Reform Party candidate with 37% of the vote, voters seem to reckon he has matured on the job, and could be the state's most popular governor ever.
Many al-Qaeda recruits who originally travelled to Pakistan now reckon they should carry on the fight elsewhere, in loosely affiliated groups such as AQAP in Yemen, Somalia's al-Shabab or north Africa's al-Qaeda in the Islamic Maghreb (AQIM).
That they are fighting on so many fronts is a source of some concern to British diplomats, who reckon they might do better to concentrate on one or two key points.
The bolder sort of investor may reckon that the high yields on offer are ample reward for the risk that Greece may be unable to repay all it has borrowed.
Some reckon the economy has been knocked on to a lower, less productive path.
But I reckon that China's effect on global manufacturing and inflation is both more diverse and more benign than my colleague Dan believes.
Worst of all, many people reckon Mr Mahuad has been soft on the bankers, whose negligence the public is having to pay for.
Dai Nippon Printing and Kodansha, two other Japanese firms that plan to supply publishing on demand, both reckon the best niche is no more than 500 copies at a time.
That prospect looms particularly large insofar as the new membership in the Senate and the new Republican management in the House of Representatives are going to have to reckon with powerful reasons to proceed on such an agenda with extreme caution.
CENTERFORSECURITYPOLICY: The denuclearizers�� dangerous ambitions
Having done a lot of observing people, lots of people, in different countries on three continents all going about their daily lives, I reckon the success or otherwise of a country depends pretty much entirely on the ability of any two people of that country picked an random to trust one each other.
Already nervous of furious Russian reactions over the U.S. missile defense plan, which involves the installation of bases in Poland and the Czech Republic, they have made clear they don't reckon it worth upsetting the Kremlin further on this issue.
There was advanced radar on that plane, if I reckon correctly - if I remember correctly.
Regardless of whether you prefer print or digital formats, we reckon that all readers deserve a hearty slap on the back.
Many lenders reckon they will end up making a return on equity in the low teens, above their cost of capital.
"The UAVs will deter poachers who will now have to reckon with surveillance from air as well as on ground, " Mr Hussain said.
Some trivia enthusiast needs to do a word count, but I reckon about one quarter of the debate was on the American economy with Romney on the attack and Obama on the defensive.
FORBES: How Obama Handed The Debate To Romney (Update: Why No Benghazi? Answer: Reuters)
They all reckon the Welsh Government is right to build on the current system, right to give schools the choice of pinning everything on one set of exams or letting pupils pick up marks during the school year.
The behavioural economists reckon this may be because psychologists have focused on trying to link the moon to extreme behavioural problems in a few disturbed people, rather than to more humdrum lunacies affecting humanity as a whole, including a bias against shares around full moons.
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