 Metallurgists, as all craftsmen and artisans, lacked the methodical intellectual background but they were the pioneers of causal thinking , based on empirical observation and experimentation (Zilsel 2000).
<fluency>  Metallurgists, as all craftsmen and artisans, lacked the methodical intellectual background but they were the pioneers of causal thinking , based on empirical observation and experimentation (Zilsel 2000).
 Metallurgists, as all craftsmen and artisans, lacked the methodical intellectual background but they were the pioneers of causal thinking based on empirical observation and experimentation (Zilsel 2000).