But it may be the only defense, however partial it may be, that Kaczynski's attorneys have. FBI agents uncovered a trove of evidence in his Montana cabin, including virtual signed confessions and a signature completed bomb.
1 Whenever the Moon, Earth and Sun are aligned, the gravitational pull of the sun adds to that of the moon causing maximum tides.  Spring tides happen when the sun and moon are on the same side of the earth (New Moon) or when the sun and moon are on opposite sides of the earth (Full Moon).
The sun also has a small effect on the Earth's tides. When the moon and sun line up, the tides created are higher than those that occur when the moon's gravity is working perpendicular to the sun's own pull. In addition, the moon's variable distance from the Earth during its orbit can also have an effect on the height of tidal variations.