[1] Pigna teaches at the Escuela Superior de Comercio Carlos Pellegrini, directing the Ver la Historia project that produced 13 documentaries covering the 1776–2001 period of the History of Argentina.

He has served as a history adviser for TV networks such as HBO, People and Arts, Italy's RAI, and Spain's Antena 3.

With Mario Pergolini, Pigna wrote, produced and hosted Algo habrán hecho por la historia argentina, a TV show aired in 2005 (and later released in a set of DVDs) which combines documentary, humor and free reenactments of historical events.

He considers that events do not really repeat themselves exactly because circumstances change, but the consequences are likely to be broadly the same, such as wealth gaps leading to authoritarian governments.

[7] Pigna uses as a pretext that foreign works accept and acknowledge subjective views, and his aim was to make the history of Argentina easy to understand by all people.