3 have canceled elective surgery for lack of supplies. Electricity remains maddeningly irregular. The much-publicized opening of the Egyptian border has fizzled, so people remain trapped here. The number of residents living on less than $1.60 a day has tripled in four years. Three-quarters of the population rely on food aid. Areas with as contested a history as this one can choose among anniversaries to commemorate. It has been four years since Hamas took over, prompting Israel and Egypt to impose a blockade on people and most goods. It is a year since a Turkish flotilla challenged the siege and Israeli commandos killed nine activists aboard the ships, leading to international outrage and an easing of conditions. And it is five years since an Israeli soldier, Staff Sgt. Gilad Shalit, was abducted and held in captivity without even visits from the Red Cross. In assessing the condition of the 1.6 million people who live in Gaza, there are issues of where to draw the baseline and — often — what motivates the discussion. It has never been among the world’s poorest places. There is near universal literacy and relatively low infant mortality, and health conditions remain better than across much of the developing world. “We have 100 percent vaccination; no polio, measles, diphtheria or AIDS,” said Mahmoud Daher, a World Health Organization official here. “We’ve never had a cholera outbreak.” The Israeli government and its defenders use such data to portray Gaza as doing just fine and Israeli policy as humane and appropriate: no flotillas need set sail. Israel’s critics say the fact that the conditions in Gaza do not rival the problems in sub-Saharan Africa only makes the political and human rights crisis here all the more tragic — and solvable. Israel, they note, still controls access to sea, air and most land routes, and its security policies have consciously strangled development opportunities for an HOUSE_OVERSIGHT_032173