class Swot

def valid?

false otherwise.
Returns true if the domain name belongs to an academic institution;

Figure out if an email or domain belongs to academic institution. 
def valid?
  if domain.nil?
    false
  elsif BLACKLIST.any? { |d| to_s =~ /(\A|\.)#{Regexp.escape(d)}\z/ }
    false
  elsif ACADEMIC_TLDS.include?(domain.tld)
    true
  elsif academic_domain?
    true
  else
    false
  end
end