Someone skilled in dialectics: someone able to arrive at logical conclusions through reasoned argument.
Someone skilled in dialectical materialism: someone able to arrive at socio-political conclusions through consideration of class differences.
Someone knowledgable about dialects.
Someone skilled in dialectical idealism: someone able to arrive at historical conclusions through consideration of contradictions.
One who speculates; an observer; a contemplator.
Synonym of field goal
One who speculates; as in investing, one who is willing to take volatile risks upon invested principal for the potential of substantial returns.
One who forms theories; a theorist.