  In his early thinking Brouwer had held that that the continuum is  presented to intuition as a whole, and that it is impossible to  construct all its points as individuals. But later he radically  transformed the concept of “point”, endowing points with  sufficient fluidity to enable them to serve as generators of a  “true” continuum. This fluidity was achieved by admitting as “points”, not only fully defined discrete numbers such as 1/9, \(e\), and the like—which have, so to speak,  already achieved “being”—but also  “numbers” which are in a perpetual state of  “becoming” in that the entries in their decimal (or  dyadic) expansions are the result of free acts of choice by a subject operating throughout an indefinitely extended time. The resulting  choice sequences cannot be conceived as finished, completed objects:  at any moment only an initial segment is known. Thus Brouwer obtained the mathematical continuum in a manner compatible with his belief in  the primordial intuition of time—that is, as an unfinished, in  fact unfinishable entity in a perpetual state of growth, a  “medium of free development”. In Brouwer’s vision, the  mathematical continuum is indeed “constructed”, not,  however, by initially shattering, as did Cantor and Dedekind, an  intuitive continuum into isolated points, but rather by assembling it from a complex of continually changing overlapping parts.