This HTML5 document contains 4 embedded RDF statements represented using HTML+Microdata notation.

The embedded RDF content will be recognized by any processor of HTML5 Microdata.

PrefixNamespace IRI
isaphttp://webisa.webdatacommons.org/prov/
isahttp://webisa.webdatacommons.org/
rdfhttp://www.w3.org/1999/02/22-rdf-syntax-ns#
n4blogspot.
provhttp://www.w3.org/ns/prov#
xsdhhttp://www.w3.org/2001/XMLSchema#
Subject Item
isa:248126841
rdf:type
prov:Entity
prov:value
Otoh, if it is used to show something that words can not convey, it becomes a true visual aid - not a crutch.btw, Hans Rosling's brilliant 2006 TED talk does not use PowerPoint (he actually pokes great fun at it, near the end) but is a superb example of a visual aid that conveys information in a way that no words (and no static graph) ever could.
prov:wasQuotedFrom
n4:com
Subject Item
isap:232228581
prov:wasDerivedFrom
isa:248126841