Phylogenetic relationships are ascertained by means of several complementary sources of evidence.
The Yankees have slugged the most homers in baseball (41) by a wide margin, but the two they hit Thursday were complementary sources of production, not primary.
Those choosing a strict vegan diet — one devoid of all foods from animals — face a greater challenge because the protein in most plants is not complete and must be balanced by consuming complementary sources, like beans and grains.
The task is made even harder when complementary sources of data in an organisation are not connected or integrated, leading to "islands of data".
It is not a coincidence that the two largest and most enduring purely digital platforms — Google and Amazon — are not primarily network-effects businesses, but instead are companies that benefit from leveraging multiple, complementary sources of competitive advantage.
He recognized two complementary sources of law: first, legal history and jurisprudence i.e., precedents that seem useful, along with their written explications and second, "living law" as manifested in current social custom.
"Debt, both domestic and external, as well as other complementary sources, cannot be excluded from Africa's list of development finance policy options … However, Africa's vulnerability to rapidly changing external conditions, including volatile commodity markets and unstable international financial markets, make debt a more problematic financing instrument than necessary," it said.
It is not a coincidence that the two largest and most enduring purely digital platforms — Google and Amazon — are not primarily network-effects businesses, but instead are companies that benefit from leveraging multiple, complementary sources of competitive advantage including, notably, traditional fixed-cost scale.
