title: simple model systems and sophisticated questions the scientific legacy of obaid siddiqi.
authors.affiliation: Homi Bhabha Center for Science Education, Tata Institute of Fundamental Research Mumbai.
authors.forename: M C
authors.initials: MC
authors.lastname: Arunan
authors.affiliation: Homi Bhabha Center for Science Education, Tata Institute of Fundamental Research Mumbai.
authors.forename: Gadiraju
authors.initials: G
authors.lastname: Nagarjuna