They found that sleep deteriorates at two points in a person's life - between the ages of 16 and 25 and again between the ages of 35 and 50.
On Monday, Tacopina said at least two points of his client's story could be disproved.
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For conflict to exist, there must be at least two points of view, or stories, between which we are undecided as to which to believe.
Hopes were briefly raised in August when a truce was announced pending agreement on a comprehensive peace settlement, under which all the rebels were to assemble at two designated points in southern Sudan.
Social scientists have discovered that we think about a decision quite differently when we are predicting how we will behave than when we have to act, a difference that is driven both by different motivations at these two points in time and by the process of ethical fading.
If Microsoft is content to let us do everything with a single point of contact at a time, or at best two points (in the case of pinch and rotate) what good is 10-finger pressure-sensitive multitouch when it comes to navigating an OS or actually getting things done?
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Conventional wisdom suggests that prosecutors only need to impeach Skilling on at least two material points to effectively undermine his credibility.
She said that as well as rewarding colleges which improved their achievement by at least two percentage points, the fund should reward those who reached a certain set high level of achievement.
Bothroyd's every touch was greeted by boos from the home fans, but he left the field a winner as the Bluebirds cut QPR's lead at the top to two points after the London club drew 0-0 at Swansea.
The two dropped points reduced Arsenal's then lead at the Premier League summit to two points and many believed Gallas' actions undermined Arsenal's title challenge.
Djokovic's mood did not improve when he could not capitalise on three gifts from his opponent at 2-2, failing to make a return with two break points at 15-40, and there was plenty of shrugging and looking to his coaches as the set progressed.
They have gone two points clear at the top after Eintracht Frankfurt were held 3-3 at home by two-time defending champions Borussia Dortmund.
And it was all settled by Warrington enjoying two scoring bursts to one at the rain-lashed Halliwell Jones to complete a first Super League double over St Helens and move two points clear at the top.
Murray, 22, hit 37 winners and lost just two points at the net on his way to his impressive victory.
The Foxes lost a lead and dropped two points at Colchester on Saturday, which left them 14th in the Championship.
Louisville's leading scorer this season, Shoni Schimmel, went scoreless for the game's first 17 minutes and had just two points at halftime.
This year, although spreads have widened from the historic lows seen in May, they have settled at a modest two percentage points or so.
At some point those two points arguing in favour of more housing being built will overwhelm however much we did overbuild in the past.
Kilmarnock go into the game at Rugby Park just two points ahead of Falkirk and needing to avoid defeat to retain their place in the Scottish Premier League.
Richards improved it, but Salford clawed back to within two points at the break when Stefan Ratchford's kick rebounded off Gleeson for Gibson to touch down in the corner.
Monaghan were dealt a major blow with the dismissal of Francis Caulfield in the first half and Queen's upped a gear to lead by two points at the interval at Clones on Saturday afternoon.
Wigan aided the Wakefield cause turning the ball over on too many occasions in the opening 40 and Wakefield were clearly heartened, reducing the home side's lead to just two points at the break.
Reading have endured a torrid campaign so far, in which they have won only six of the 27 matches prior to the victory at Anfield and are two points above the Championship relegation zone.
Credit Smith, who had just two points at halftime on 1-of-6 shooting but got in the lane and to the line, making nine of 10 free throws and a 20-footer with 2:36 remaining that sealed the win as the Jazz went cold.
Home scrum-half Richie Myler also crossed twice, while the game turned on the loss of David Solomona, led off with a knee injury following Andy Coley's tackle shortly after he had scored Warrington's fourth try to bring them within two points at 22-20.
After six seasons of comparative struggle and tension-filled matches battling away at the wrong end of the Premiership, Worcester have opened up in The Championship with four straight wins to go two points clear at the top.
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They must win at Upton Park to have any hope of survival but if Hull get a point at home to Manchester United and Newcastle, who they are two points behind, win at Villa, they are definitely down.
And Manchester City, which had been two points clear of United at the top just three weeks earlier but was now three points back, had clearly fallen prey.
Ancic and Ljubicic finally converted the second of two match points at 5-4 up to clinch victory.
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